Answer:
Step-by-step explanation:
first you divide the shape into 3 parts ;a big triangle, and 2 little squares
after that to get the height of the triangle i gotten by adding
3+5+2+6=16yd
area of a triangle =1/2 × b×h
area =1/2×7×16
area=112/2
area=56yd²
small squre 1=
area=5×5
=25yd²
area of small rectangle=
area=LB
=3×2
=6yd²
total area =triangle+square+rectangle
=56+25+6
TA=87yd²
help me please help answer the question below Do not round
Answer:
0.1296
Step-by-step explanation:
0.6*0.6=0.36
0.6*0.36=0.216
0.6*0.216=0.1296
Determine the domain of the following graph:
21098
11
76
4
+32
2
1
-12-11-10-9-8-7-6-5-4-3-2-1
5
ܐ ܣ ܣ ܟ ܬ ܬ { ܣ ܣ
-2
-3
-4
-5
-6
-9
-7
-10
-8
-11
-12
2 3 4 5 6 7 8 9 10 11 12
The domain of the following graph is equal to [-11. -3]
What is a domain?In Mathematics and Geometry, a domain refers to the set of all real numbers (x-values) for which a particular function is defined.
How to identify the domain any graph?In Mathematics and Geometry, the horizontal portion of any graph is used to represent all domain values and they are both read and written from smaller to larger numerical values, which simply means from the left of any graph to the right.
By critically observing the graph shown in the image attached above, we can reasonably and logically deduce the following domain and range:
Domain = [-11, -3].
Range = [-5, 0].
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Write down the equations of six lines that increase in steepness
Answer:
Step-by-step explanation:
The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).
4.7. the time it takes a printer to print a job is an exponential random variable with the expectation of 12 seconds. you send a job to the printer at 10:00 am, and it appears to be third in line. what is the probability that your job will be ready before 10:01?
The probability of exponential random variables that your job will be ready before 10:01 is approximately 0.0693, or about 6.93%.
We can use the cumulative distribution function (CDF) of the exponential distribution to solve this problem. Let X be the random variable representing the time it takes to print a job. Then, X follows an exponential distribution with parameter λ = 1/12, since the expectation of X is 12 seconds.
The probability that your job will be ready before 10:01 is equal to the probability that the printer finishes the first two jobs in less than 1 minute since your job is third in line.
Let Y be the random variable representing the time it takes to print the first job. Then, Y also follows an exponential distribution with parameter λ = 1/12.
The probability that the first job is finished before 10:01 is given by:
P(Y < 60) = 1 - [tex]$e^{(-\lambda t)}$[/tex] = 1 - [tex]e^{(-(1/12)(60))}[/tex] = 0.3935
Similarly, the probability that the second job is finished before 10:01 is also 0.3935, since it is also an exponential random variable with the same parameter. Therefore, the probability that your job will be ready before 10:01 is:
P(X < 60) = P(Y < 60) × P(Y < 60) × P(X < 60) = 0.3935² × (1 - [tex]$e^{(-\lambda t)}$[/tex]) = 0.0693
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Chase is moving and must rent a truck. There is an initial charge of $35 for the rental plus a fee of $2.50 per mile driven. Make a table of values and then write an equation for C,C, in terms of m,m, representing the total cost of renting the truck if Chase were to drive m miles.
The required equation in the given situation is C = 35 + 2.50m where C is the total cost and m is the number of miles driven.
What is the equation?Equation: A declaration that two expressions with variables or integers are equal.
In essence, equations are questions and attempts to systematically identify the solutions to these questions have been the driving forces behind the creation of mathematics.
A mathematical statement known as an equation is made up of two expressions joined together by the equal sign.
A formula would be 3x - 5 = 16, for instance.
The equation would be:
C is the total cost and m is the miles driven.
We know that:
Charge of the truck: $35
Charge per mile: $2.50
Then, form the equation as follows:
C = 35 + 2.50m
Therefore, the required equation in the given situation is C = 35 + 2.50m where C is the total cost and m is the number of miles driven.
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the average car can go 25 miles on one gallon of gas. You can write an equation to show the relationship between the amount of gas you buy and how far you can travel
Answer:
Step-by-step explanation:
the inword
Janelle opened a savings account with $500 that earns 0.3% simple interest annually. After how many years will the balance in the account be $510.50?
It will take 7 years for Janelle's savings account balance to reach $510.50 at an annual interest rate of 0.3%.
What is simple interest?The interest rate on a loan or investment is calculated using the original principal amount. It does not take into account the effects of compounding, hence the interest charge or payment does not alter over time. Simple interest can be applied to several sorts of loans or savings accounts. It is computed only on the basis of the principal.
We can use the formula for simple interest to solve this problem:
Simple Interest = Principal * Rate * Time
where Principal is the initial amount in the account, Rate is the annual interest rate, and Time is the number of years.
Let's use the given information to find the time it takes to reach a balance of $510.50:
Simple Interest = $510.50 - $500 = $10.50
Principal = $500
Rate = 0.3% = 0.003 (since the rate is given as a percentage, we need to divide by 100 to get the decimal equivalent)
Substituting these values into the formula, we get:
$10.50 = $500 * 0.003 * Time
Simplifying this equation, we get:
Time = $10.50 / ($500 * 0.003) = 7 years
Therefore, it will take 7 years for Janelle's savings account balance to reach $510.50 at an annual interest rate of 0.3%.
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a scientist claims that the mean gestation period for a fox is more than 48.9 weeks. if a hypothesis test is performed that rejects the null hypothesis, how would this decision be interpreted? g
The rejection of the null hypothesis in a hypothesis test that claims the mean gestation period for a fox is more than 48.9 weeks implies there is sufficient evidence to support the claim, indicating a statistically significant difference between the observed sample mean and the hypothesized mean.
If a hypothesis test is performed that rejects the null hypothesis that the mean gestation period for a fox is 48.9 weeks or less, it means that there is sufficient evidence to support the claim that the mean gestation period for a fox is more than 48.9 weeks.
The rejection of the null hypothesis implies that the observed sample mean is significantly different from the hypothesized mean, and this difference is unlikely to have occurred by chance alone. The statistical test used to evaluate the hypothesis would have produced a p-value less than the significance level, indicating that the evidence against the null hypothesis is strong.
Therefore, the scientist can conclude that there is evidence to support their claim that the mean gestation period for a fox is more than 48.9 weeks, and this finding could have important implications for understanding fox reproductive biology and management.
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4negative slope equations, 2undefined slope equations, and 2zero slope equations (y=mx+b)
Answer:
negative
y=-x
y=-2x+6
y=(-1/2)x+1
y=-5x+20
undefined
x=4
x=-3
zero slope
y=2
y=-100
Kylie brought 5 pears to soccer practice to share with her teammates. She cuts each pear into thirds. How many slices of pears does she have to share with her teammates? Which equations can you use to solve the problem? Select two equations. A. 5 × 3 = 15 B. 1 5 × 1 3 = 1 15 C. 1 5 × 3 = 3 5 D. 5 ÷ 1 3 = 15 E. 1 3 ÷ 5 = 1 15
Answer: a and d
Step-by-step explanation:
1 pear = 3 slices
5 pears = 15 slices
5x3=15
OR
5/1/3=15
Equation A and Equation D are the two equations that Kylie can use to solve the problem.
This is a simple mathematics problem.
Kylie has five pears. She cuts each of her pears into thirds, i.e., three slices of each pear.
So, now Kylie will do the same for each pear she has:
Total Slices with Kylie = 5 x 3
Total Slices with Kylie = 15
Equation D can also be used to define the situation of Kylie. Total pears with her are five and each pear is divided into thirds, i.e., 1/3
Total Slices with Kylie = 5 ÷ 1/3
Total Slices with Kylie = 15
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in the faculty lecture, dr. salon mentioned a survey that was taken in the slums in nairobi. from this survey, how long did the average person live in the slums?
Without specific data from the survey, I cannot provide the exact average length of time a person lived in the slums. I can be found by collecting data and finding average.
In general, surveys can be used to gather information on a population's characteristics and experiences, including their life expectancy. If the survey conducted in the slums of Nairobi included questions about life expectancy or mortality rates, the average lifespan of the individuals surveyed could be calculated using the data collected. It's important to note that the average lifespan in the slums may differ from that of other areas in Nairobi or other regions of the world.
Based on the information provided, Dr. Salon mentioned a survey conducted in the slums of Nairobi. To determine how long the average person lived in the slums, we would follow these steps:
1. Collect the data: The survey would gather information about the length of time people lived in the slums.
2. Calculate the average: Add up the total number of years all respondents lived in the slums and divide by the total number of respondents.
Without specific data from the survey, can't provide the exact average length of time a person lived in the slums. Please provide more information or refer back to Dr. Salon's lecture for the results of the survey.
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dean halverson recently read that full-time college students study 20 hours each week. she decides to do a study at her university to see if there is evidence that students study an average of more than 20 hours each week. a random sample of 33 students were asked to keep a diary of their activities over a period of several weeks. it was found that the average number of hours that the 33 students studied each week was 22.2 hours. the sample standard deviation of 3.9 hours. find the p -value. the p -value should be rounded to 4-decimal places.
The p-value is 0.0001, indicating strong evidence that college students study more than 20 hours per week based on the sample data.
How to calculate the p-value?To test the hypothesis that the average number of hours that college students study per week is greater than 20, we can use a one-sample t-test.
The null hypothesis is that the population mean is equal to 20 hours per week, while the alternative hypothesis is that the population mean is greater than 20 hours per week.
Let's calculate the t-value:
t = (sample mean - hypothesized population mean) / (sample standard deviation / √(sample size))
t = (22.2 - 20) / (3.9 / √(33))
t = 4.49
The degrees of freedom for the t-test is 33 - 1 = 32.
Using a t-table or calculator, we can find the p-value associated with a t-value of 4.49 and 32 degrees of freedom. The p-value is less than 0.0001 (it is actually very close to 0), which means that there is very strong evidence to reject the null hypothesis and conclude that college students study more than 20 hours per week.
Therefore, the p-value is 0.0001 (rounded to 4 decimal places).
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(Score for Question 3: of 12 points) 3. What is the surface area of this composite solid? Show your work.
The surface area of this solid would be; 127.
To Find the surface area of the composite solid, we have;
Sides (a) area
4 * 3 = 12
12 * 2 = 24
Now Sides (b) area
7 * 3 = 21
21 * 3 = 63
Then Face (c) area
3 * 4 / 2 = 6
6 * 2 = 12
Base area
4 * 7 = 28
Total surface area
To calculate the total surface area we have to add the value of each face :
28 + 12 + 63 + 24 = 127
Thus, the surface area of this solid is 127.
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the mean life of a television set is 97 months with a variance of 169 . if a sample of 59 televisions is randomly selected, what is the probability that the sample mean would be less than 100.9 months? round your answer to four decimal places.
The probability that the sample mean would be less than 100.9 months is approximately 0.9600.
We can use the central limit theorem to approximate the sampling distribution of the sample mean as a normal distribution with a mean of 97 months (the population mean) and a standard deviation of σ/√n, where σ is the population standard deviation and n is the sample size.
The standard deviation of the sampling distribution can be calculated as follows
σ/√n = √(169)/√59 = 2.065
Therefore, the z-score corresponding to a sample mean of 100.9 months is
z = (100.9 - 97) / 2.065 = 1.75
Using a standard normal distribution table or calculator, we can find that the probability of obtaining a z-score less than 1.75 is approximately 0.9599.
Therefore, the probability that the sample mean would be less than 100.9 months is approximately 0.9599.
Rounding this to four decimal places, we get
P(x < 100.9) ≈ 0.9600
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In an all boys school, the heights of the student body are normally distributed with a mean of 71 inches and a standard deviation of 4.5 inches. Out of the 1912 boys who go to that school, how many would be expected to be between 61 and 70 inches tall, to the nearest whole number?
The range of heights between 66 inches and 76 inches indicates the center 95% of males' heights from this school.
What do we mean by interval?All the numbers between two specific integers are referred to as an interval.
All actual values between those two are included in this range.
The class interval is calculated by deducting the upper limit from the class' lower limit.
The following is the formula for the class interval: Upper limit - Lower limit equals the class interval.
Let x represent the heights of the male students at this institution.
The Empirical Rule states that given the mean and standard deviation:
1) Approximately 68% of the x values fall within the range of the mean plus or minus one standard deviation.
2) Nearly 95% of the x values fall within the range of the mean plus or minus two standard deviations.
3) Nearly 99.7% of the x values fall within a range of 3 standard deviations either above or below the mean.
Considering the data provided:
mean = 71 inches
Standard deviation = 2.5 inches
We want to know where 95% of the x values fall. The variation from the mean is 2 standard deviations. Therefore,
2 standard deviations = 2 × 2.5 = 5 inches
Heights:
71 - 5 = 66 inches and
71 + 5 = 76 inches
Therefore, the range of heights between 66 inches and 76 inches indicates the center 95% of males' heights from this school.
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Complete question:
In an all-boys school, the heights of the student body are normally distributed with a mean of 71 inches and a standard deviation of 2.5 inches. Using the empirical rule, determine the interval of heights that represents the middle 95% of male heights from this school.
Consider w1 = 4 + 2i and w2 = –1 – 3i. Which graph represents the sum w1 + w2? On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. A line goes from (0, 0) to point (3, negative 5). On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. A line goes from (0, 0) to point (3, negative 1). On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. A line goes from (0, 0) to point (5, 5). On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. A line goes from (0, 0) to point (5, 1).
The graph that represents the sum w1 + w2 is: b. A line goes from (0, 0) to point (3, negative 1). On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real.
What graph represents the sum w1 + w2?To find the sum of w1 and w2, we simply add their real and imaginary parts separately:
w1 + w2 = (4 + 2i) + (-1 - 3i) = 3 - i
So the real part of the sum is 3, and the imaginary part is -1. Therefore, the sum w1 + w2 corresponds to the point (3, -1) on the coordinate plane.
The graph that represents this point is option (b), where a line goes from (0, 0) to point (3, -1) on a coordinate plane with the y-axis labeled imaginary and the x-axis labeled real. The other options do not represent the correct point or are not lines passing through the origin.
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tell whether the ordered pair is a solution of the inequality. 2z less than 15; z =11
The ordered pair (z, 11) is not a solution of the inequality.
Explain inequality
An inequality is a statement that compares two values, expressing that one value is greater than or less than the other, or that they are not equal. Inequalities are represented using symbols such as < (less than), > (greater than), ≤ (less than or equal to), and ≥ (greater than or equal to). They are used to describe relationships between numbers, variables, and expressions.
According to the given information
To determine whether the ordered pair (z, 11) is a solution of the inequality 2z < 15, we need to substitute z = 11 into the inequality and see if it is true or false:
2z < 15
2(11) < 15
22 < 15 (this is false)
Since 22 is not less than 15, the ordered pair (z, 11) is not a solution to the inequality.
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Restaurant Revenue
In this activity, you will create quadratic inequalities in one variable and use them to solve problems. Read this scenario, and then use the information to answer the questions that follow.
Noah manages a buffet at a local restaurant. He charges $10 for the buffet. On average, 16 customers choose the buffet as their meal every hour. After surveying several customers, Noah has determined that for every $1 increase in the cost of the buffet, the average number of customers who select the buffet will decrease by 2 per hour. The restaurant owner wants the buffet to maintain a minimum revenue of $130 per hour.
Noah wants to model this situation with an inequality and use the model to help him make the best pricing decisions.
Part A
Question
Write two expressions for this situation, one representing the cost per customer and the other representing the average number of customers. Assume that x represents the number of $1 increases in the cost of the buffet.
Enter the correct answer in the box. Type the cost expression on the first line and the customer expression on the second line
The cost per customer becomes $( 10+ x) and the average number of customers can be represented as (16 - 2x). Also the inequality equation is 160 - 4x -2[tex]x^{2}[/tex] [tex]\geq[/tex] 130 to maintain minimum revenue of $130 after rising price by x number of times by $1 as 2 customers leave on average per hour.
Let x represents the number of $1 increases in the cost of the buffet.
Noah manages a buffet at a local restaurant and charges $10 for the buffet.
On average, 16 customers choose the buffet as their meal every hour.
That is, the average revenue from 16 customers is = $(10*16)= $160
After surveying Noah has determined that for every $1 increase in the cost of the buffet, the average number of customers who select the buffet will decrease by 2 per hour.
That is, as cost of buffet for every hour rises by $x from $10 we get, $ (10+x) , and the average number of customers who select the buffet will decrease by 2 per hour.
The new average number of customers per hour after rise in cost of buffet by $x is (16 -2x).
This implies, the revenue earned now is = $(16- 2x)(10 + x) = $(160 + 16x - 20x -2[tex]x^{2}[/tex] ) = $ (160 - 4x -2[tex]x^{2}[/tex] )
The restaurant owner wants the buffet to maintain a minimum revenue of $130 per hour.
Thus, after the increase in price by $x per hour , the inequality equation that helps Noah to pick best pricing decisions will be ,
160 - 4x -2[tex]x^{2}[/tex] [tex]\geq[/tex] 130
Here, cost per customer becomes $( 10+ x) and the average number of customers can be represented as (16 - 2x).
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I need this answer asap can someone help?
The volume of the solid is 4,503.22 in³.
What is volume?
A volume is simply defined as the amount of space occupied by any three-dimensional solid. These solids can be a cube, a cuboid, a cone, a cylinder, or a sphere. Different shapes have different volumes
The volume of a solid with a hollow cylinder can be calculated by subtracting the volume of the inner cylinder from the volume of the outer cylinder.
Assuming the dimensions in the figure are in inches, the outer cylinder has a height of 17 inches and a radius of 9 inches, so its volume is:
[tex]V_{outer} = \pi * r^2 * h[/tex]
= π × 9² × 17 ≈ 4,842.51 in³
The inner cylinder has a height of 12 inches and a radius of 3 inches, so its volume is:
[tex]V_{inner} = \pi * r^2 * h[/tex] = π × 3² × 12 ≈ 339.29 in³
To find the volume of the solid, we need to subtract the volume of the inner cylinder from the volume of the outer cylinder:
[tex]V_{solid }= V_{outer} - V_{inner}[/tex]
≈ 4,842.51 - 339.29 ≈ 4,503.22 in³
Hence, the volume of the solid is 4,503.22 in³.
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which of the following is true with regards to statistical analysis? which of the following is true with regards to statistical analysis? bivariate analysis is a special form of multivariate analysis. it examines the relation between two or more variables. regression analysis is a univariate analysis. multivariate analysis examines the relationship between one, two or more variables. univariate analysis involves the analysis of a single variable.
The correct option is: "Univariate analysis involves the analysis of a single variable."
The following statement is true with regards to statistical analysis:
Univariate analysis involves the analysis of a single variable.
The other statements are not entirely accurate:
Bivariate analysis is a form of multivariate analysis that examines the relationship between two variables, but multivariate analysis can involve more than two variables.
Regression analysis is a multivariate analysis technique that examines the relationship between one dependent variable and one or more independent variables.
Multivariate analysis involves the examination of the relationship between two or more variables, not necessarily one, two, or more.
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The box plots display measures from data collected when 20 people were asked about their wait time at a drive-thru restaurant window.
A horizontal line starting at 0, with tick marks every one-half unit up to 32. The line is labeled Wait Time In Minutes. The box extends from 10 to 14.5 on the number line. A line in the box is at 12.5. The lines outside the box end at 5 and 20. The graph is titled Fast Chicken.
A horizontal line starting at 0, with tick marks every one-half unit up to 32. The line is labeled Wait Time In Minutes. The box extends from 8.5 to 15.5 on the number line. A line in the box is at 12. The lines outside the box end at 3 and 27. The graph is titled Super Fast Food.
Which drive-thru typically has less wait time, and why?
Fast Chicken, because it has a smaller median
Fast Chicken, because it has a smaller mean
Super Fast Food, because it has a smaller median
Super Fast Food, because it has a smaller mean
The correct answer is: Super Fast Food, because it has a smaller median.
What is the median?
The median is a measure of central tendency that represents the middle value in a set of data when the data is arranged in ascending or descending order.
Based on the given information, Super Fast Food typically has less wait time compared to Fast Chicken.
The median is the middle value in a set of data, and it is often used as a measure of central tendency in box plots. In this case, the median for Super Fast Food is 12, while the median for Fast Chicken is 12.5. Since the median for Super Fast Food is smaller than the median for Fast Chicken, it suggests that the wait times at Super Fast Food are generally lower than those at Fast Chicken.
Hence, the correct answer is: Super Fast Food, because it has a smaller median.
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Amy is sewing some pants for herself. This is the rule for how much fabric she needs to buy. • Measure from your waist to the finished length of thepants • Double this measurement • Add 8inches 1. Amy’s measurement from her waist to the finished length of the pants is 35inches. How many inches of fabric does sheneed?
Amy needs 78 inches of fabric for her pants if she follows the given rule.
Define inches ?
An inch is a unit of length that is equal to exactly 2.54 centimeters. It is commonly used in the United States and other countries that use the Imperial system of measurement.
To determine how much fabric Amy needs for her pants, we can use the rule provided to us. The first step is to measure from the waist to the finished length of the pants, which in this case is 35 inches.
Next, we need to double this measurement, which gives us 2 * 35 = 70 inches. This is because we need to account for the fabric that will make up both the front and back of the pants.
Finally, we need to add 8 inches to the doubled measurement, which gives us 70 + 8 = 78 inches. This additional 8 inches is to account for any seams, hems, or other finishing touches that may be required to complete the pants.
Therefore, Amy needs 78 inches of fabric for her pants.
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if nurse susan jones day includes seven trips from the nursing pod to each of the 12 rooms back and forth, 20 trips to the central medical supply, six trips to the break room, and 12 trips to the pod linen supply, how many miles does she walk during her shift? what are the differences in the travel times between the two nurses for the random day?
Nurse Susan Jones would walk a total of 16,000 feet or approximately 3.03 miles during her shift.
Without knowing the travel times of the two nurses, it is not possible to determine the differences in their travel times for a random day.
Assuming that each trip from the nursing pod to a room and back is approximately 50 feet and each trip to the central medical supply, break room, and linen supply is approximately 100 feet, nurse Susan Jones would walk a total of:
- 7 trips to each of the 12 rooms = 7 x 12 x 2 x 50 feet = 8,400 feet
- 20 trips to the central medical supply = 20 x 2 x 100 feet = 4,000 feet
- 6 trips to the break room = 6 x 2 x 100 feet = 1,200 feet
- 12 trips to the pod linen supply = 12 x 2 x 100 feet = 2,400 feet
Therefore, nurse Susan Jones would walk a total of 16,000 feet or approximately 3.03 miles during her shift.
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Nurse Susan Jones would walk nearly 34.4 miles during her shift.
Assuming that Nurse Susan Jones walks an average of 0.2 miles per round trip, she would walk approximately 34.4 miles during her shift (7 trips x 12 rooms x 2 round trips x 0.2 miles per round trip + 20 trips x 2 round trips x 0.2 miles per round trip + 6 trips x 2 round trips x 0.2 miles per round trip + 12 trips x 2 round trips x 0.2 miles per round trip).
Unfortunately, there is not enough information provided to calculate the differences in travel times between two nurses on a random day. It would depend on factors such as the number and location of rooms each nurse is responsible for, the location of the medical supply and break room, and any additional tasks or responsibilities each nurse has during their shift.
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what is the answer to the question
The least to the greatest of the amount of gas bought each day last week are Tuesday, Thursday, Friday, Wednesday and Monday.
How to find the gas purchased from least to greatest?Chaz kept a record of how many gallons of gas he purchase everyday last week.
Therefore, the correct order of the least amount of gas purchased to the greatest amount of gas purchased can be represented as follows:
Therefore,
Tuesday = 3.7
Thursday = 3.73
Friday = 4.253
Wednesday = 4.256
Monday = 4.6
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Convert the polar coordinates (6, -π/3) to Cartesian coordinates. Leave answers in fractional form. Use the "/" key as the fraction bar.
the Cartesian coordinates of the point represented by the polar coordinates (6, -π/3) are (3, -3√3).
What is a fraction?
A fraction represents a part of a number or any number of equal parts. There is a fraction, containing numerator and denominator.
To convert these polar coordinates to Cartesian coordinates (x, y), we use the following formulas:
x = r cos(θ)
y = r sin(θ)
Substituting the given values, we get:
x = 6 cos(-π/3) = 6 × (1/2) = 3
y = 6 sin(-π/3) = 6 × (-√3/2) = -3√3
Therefore, the Cartesian coordinates of the point represented by the polar coordinates (6, -π/3) are (3, -3√3).
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On a trip, you had to change your money from dollars to euros.
You got 450
euros for 600
dollars.
What is a unit rate that describes the exchange?
Answer: 0.75 euros = 1 dollar
Step-by-step explanation:
Unit rate
450 euros ----> 600 dollars
450/600 = 0.75
0.75 euros = 1 dollar
Uni rate for the exchange of dollars to euros is 0.75 euros/dollars.
Explanation :[tex]\implies[/tex] To find the unit rate of exchange from dollars to euros, divide the amount of euros Monica received by the amount of dollars she paid:
[tex]\largearrow{\sf{\boxd{\boxed{Unit \ change = \dfrac{Number \ of \ euros \ you \got}{Number \ of \ dollars \ you \ have} }}}}[/tex]
[tex]\implies{\sf{Unit \ change = \dfrac{\cancel{450}}{\cancel{600}} }}[/tex]
[tex]\implies{\sf{Unit \ change = 0.75 }}[/tex]
As a result, the unit rate for the exchange of dollars to euros is 0.75 euros/dollar.
Solve the right triangle. 5
6
F
E
D
30°
Write your answers in simplified, rationalized form. Do not round. DF =
DE =
10
m∠D =
60
°
The length of the other leg is 8 cm, and the measures of the two acute angles are approximately 36.87° and 53.13°.
To solve the right triangle, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides. Therefore, we have:
[tex]10^2 = 6^2 + x^2 \\x = sqrt(10^2 - 6^2) = 8 cm[/tex]
So the length of the other leg is 8 cm.
Let θ be one of the acute angles:
sin(θ) = opposite/hypotenuse = 6/10 = 0.6
cos(θ) = adjacent/hypotenuse = x/10 = 8/10 = 0.8
θ ≈ 36.87°.
Since the other acute angle is complementary to θ, its measure is 90° - 36.87° = 53.13°.
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--The complete Question is, A right triangle has a hypotenuse of length 10 cm and one leg of length 6 cm. Solve the right triangle, finding the length of the other leg and the measures of the two acute angles. --
FINANCE Rawan deposits $13,000 into an account that pays 2.6% annual interest
compounded every 6 months.
a. Write a function to represent the balance A in the account after t years.
b. What will be the balance after 4 years?
c. What will be the balance after 7.5 years?
a) Required function is [tex]A(t) = 13,000 \times (1.013)^{2t}[/tex]
b) The balance after 4 years is $15,182.51.
c)The balance after 7.5 years is $16,802.59
a. What is the function represent the balance A in the account after t years?
The function to represent the balance A in the account after t years can be given by:
[tex]A(t) = P \times (1 + \frac{r}{n})^{(nt)}[/tex]
where P is the principal amount (initial deposit), r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years.
In this case, P = $13,000, r = 2.6%, n = 2 (interest is compounded every 6 months), and t is the time in years.
Substituting these values into the formula,
[tex]A(t) = 13,000 \times (1 + \frac{ 0.026}{2})^{(2t)}[/tex]
Simplifying the expression,
[tex]A(t) = 13,000 \times (1.013)^{2t}[/tex]
b. To find the balance after 4 years, we can substitute t = 4 into the formula we derived above:
[tex]A(4) = 13,000 \times (1.013)^{(2 \times 4)} \\ = 13,000 \times (1.013)^8 \\ = 15,182.51[/tex]
Therefore, the balance after 4 years is $15,182.51.
c. To find the balance after 7.5 years, we can substitute t = 7.5 into the formula we derived above:
A(t) = 13,000 × (1.013)¹⁵ = 16,802.59
Therefore, the balance after 7.5 years is $16,802.59.
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During a snowstorm, Annabelle tracked the amount of snow on the ground. When
the storm began, there were 3 inches of snow on the ground. Snow fell at a constant
rate of 1 inch per hour until another 4 inches had fallen. The storm then stopped for 6
hours and then started again at a constant rate of 2 inches per hour for the next 5
hours. As soon as the storm stopped again, the sun came out and melted the snow for
the next 7 hours at a constant rate of 2 inches per hour. Make a graph showing the
inches of snow on the ground over time using the data that Annabelle collected.
The graph will have a horizontal line from 4 to 15 hours (since there is no change in snow depth during that time) and two downward sloping lines from 0 to 4 hours and from 15 to 22 hours (representing snowfall and snow melt, respectively)
How to draw a graph?To make a graph of the inches of snow on the ground over time, we can use the following steps:
We can divide the time into different intervals based on the snowfall, the break in the storm, and the snow melt. We have:
Snowfall for the first 4 hours (at a rate of 1 inch per hour).Break in the storm for 6 hours.Snowfall for the next 5 hours (at a rate of 2 inches per hour).Snow melt for the next 7 hours (at a rate of 2 inches per hour).We can then calculate the inches of snow on the ground at the end of each interval, starting with the initial 3 inches of snow. We have:
After 4 hours of snowfall: 3 + 4(1) = 7 inches of snow on the ground.After 10 hours (4 hours of snowfall + 6 hours of break): 7 inches of snow on the ground.After 15 hours (10 hours + 5 hours of snowfall): 7 + 5(2) = 17 inches of snow on the ground.After 22 hours (15 hours + 7 hours of snow melt): 17 - 7(2) = 3 inches of snow on the ground.We can now plot these points on a graph with time (in hours) on the x-axis and inches of snow on the y-axis. The graph will have four points: (0,3), (4,7), (15,17), and (22,3).
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what is the range and domain of y = 3x^2 + 2?
The domain of the function is (-∞, ∞) and the range of the function is [2, ∞).
Define range!In mathematics, the range of a function refers to the set of all possible output values (dependent variable) that the function can produce for its corresponding input values (independent variable).
According to question:The given function is y = 3x² + 2.
The domain of a function is the set of all possible values of the independent variable (x) for which the function is defined. Since the given function is a polynomial function, it is defined for all real numbers.
Therefore, the domain of the function y = 3x² + 2 is (-∞, ∞), which means that the function is defined for all real values of x.
The range of a function is the set of all possible values of the dependent variable (y) that the function can take. In this case, the function is a quadratic function with a leading coefficient of 3, which means that the parabola opens upwards and its vertex is at the point (0,2).
Since the minimum value of the function is 2, the range of the function is [2, ∞).
Therefore, the domain of the function is (-∞, ∞) and the range of the function is [2, ∞).
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