Answer: C. m(h) = 5.25h; $11.81
The equation is:
m = 5.25*h
If she works 2 hours and 15 minutes she will earn:
first we need to convert hours and minutes in decimal hours.
2 hours and 15 minutes = 2,25 hours
m = 5,25* 2,25 = $11.8125
Step-by-step explanation:
Answer:
m(h)= 5.25h; 11.81
11.81 is the answer
Find the common difference of the arithmetic sequence
-17, -15, -13, ...
Answer:
term 1 - term 2 = sequence
so
-17-(-15) = -2
and if you minus the rest by -2 it will give you the next term
-15-(-2) = -13
-13-(-2) = -11
Answer:
2
Step-by-step explanation:
:0
Consider the original parallelogram and the reduction.
What is the length of side A in the new parallelogram?
Given:
The given figure represents the original parallelogram and the reduction.
To find:
The length of side A in the new parallelogram.
Solution:
We know that the original figure is always similar to its reduction. So, both parallelograms are similar to each other.
The corresponding sides of similar figures are proportional.
[tex]\dfrac{45}{18}=\dfrac{5}{A}[/tex]
[tex]45\times A=5\times 18[/tex]
[tex]45A=90[/tex]
Divide both sides by 45.
[tex]A=\dfrac{90}{45}[/tex]
[tex]A=2[/tex]
The length of side A in the new parallelogram is 2 cm. Therefore, the correct option is A.
The first two steps in the derivation of the quadratic formula by completing the square are shown below.
Which answer choice shows the correct next step?
Step 1: ax^2+bx+c =0
Step 2: ax^2+bx=-c
Answer: C
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
HELP!!! i need an answer quick
Answer:
14 that's the answer I think so hope its it
...................................................
Answer:
Brand A
Hope this helped!
Step-by-step explanation:
Say you want to know if boys are more likely than girls to "wait for their missionary". You take a random sample of 57 males and 63 females, all of whom are in a relationship with someone who just left on a mission. You follow-up with them after the mission of their significant other returned home to determine if their relationship continue after the mission. What type of analysis is best suited for this study
Answer: 2 independent sample test of proportions
Step-by-step explanation:
The teo independent sample test of proportion is also referred to as the two proportion z-test and it simply allows the researcher to compare the two proportions in order to ascertain if they're the same or not.
In this case, the null hypothesis will be that that the proportions given in the research are the same while the alternate hypothesis will be that there is a difference between the proportions given.
The kind of analysis that would be most adequate for the given study:
Test of 2 Independent Proportions.
Independent Proportions
The test of two independent proportions is characterized as the method of study in which samples are opted randomly and allowed to remain independent.
In such a study, a minimum of 5 failures and successes are considered to reach a conclusion.
In the given situation, the samples of males and females are random and permitted to stay free("continue after the mission") and evaluated after a time to take the deduction.
Learn more about "Sample Method" here:
brainly.com/question/1413932
Someone please help with these two similar figures questions!!! I need this asap!! I will mark brainliest if right please!
Answer:
K and R S and D
Step-by-step explanation: i hope this helps
One kitten weighs 2 pounds, 4 ounces, and a second kitten weighs 2 pounds, 2 ounces. What is their combined weight in ounces? *
I WILL GIVE BRAINLEST BECAUSE I WANT TO BE NICE
Will give brainlist for correct answer.
Answer:
(-5, -1)
Step-by-step explanation:
When two lines intersect, their x and y values are equal. So,
x = 3y - 2 must equal -7 - 2y = x
x = 3y - 2 = -7 - 2y = x
Let's look at the two middle equations and solve for y.
3y - 2 = -7 - 2y
Add 2y to both sides
5y - 2 = -7
Add 2 to both sides.
5y = -5
y = -1
Now, let's find x. You can use either equation for this step.
When y = -1, then 3y - 2 =
(3)(-1) - 2 = -3 - 2 = -5
So, x = -5, and y = -1
Thus, the answer is (-5, -1)
I hope this helps! Feel free to ask any questions!
can anyone answer this????
Answer:
4x^2[tex]\sqrt{7x^{2} }[/tex]
Estimate 1.9 x 4.4
A. Between 4 and 10
B. between 12 and 20
C. between 1 and 5
D Between 1 and 12
Answer:
A
Step-by-step explanation:
it's 8.36 which is between 4 and 10
Graph the function and select the y-intercept. y = 2 • 3x
a. 1
b. 2
c. 3
d. 4
Answer:
i think is number 2
Find two numbers that add up to 158. The greater number is 40 more than the lesser number
HELPPP MEEE PLEASEEE!!!!
Answer:
1) 3 , 2)Add 8 floats 3) -2 4) Remove 8 anchors.
Step-by-step explanation:
180º represent chocolate, 90º represent vanilla and 90º represents other flavor draw the pie chart.
will be marked as brainliest
Answer:
Look at attached.
Step-by-step explanation:
A full circle is 360 degrees. So 180 represents half of the circle and 90 represents a quarter.
Answer:
chocolate 180°
Step-by-step explanation:
chocolate=180°
vanilla=90°
othere flavor=90°
the total degrees of the pie chart 360 °
This is 7th grade math so pls answer asap
1: v/8=2
2:16=k/11
3:18+m=8
v/8=2
x8 x8
v=16
16=k/11
x11 x11
176=k
18+m=8
-18 -18
m=-10
---
hope it helps
4 +y = 12. Substitute 8 for x.
Answer:
where should I substitute 8 for x? if its like this 4(8)+y=12 than its y=-20
Step-by-step explanation:
25a² - 16b² when a = --2 and b = 3
25a² - 16b²
25*-2² - 16*3²
25*4 - 16*9
100 - 144
= -44
I need help !!!!!!!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
a) looks like about 180 ( by the graph)
b) February was the only month where the average was about 70
c) yes, b/c this graph has months along the bottom, as the independent variable and the rain fall in each as the dependent so the amount of rain is a function of each month
145% of what number is 21
What is an equation of the line that passes through the points (5, 5) and (5, -8)
Answer:
Write the problem as a mathematical expression. (5,5), (5,−8)
Use y=mx+b to calculate the equation of the line, where m represents the slope and b represents the y-intercept. To calculate the equation of the line, use the y=mx+b format.
Slope is equal to the change in y over the change in x , or rise over run.
m=(change in y)/(change in x)
The change in x is equal to the difference in x-coordinates (also called run), and the change in y
is equal to the difference in y-coordinates (also called rise).
m=(y2−y1) / (x2−x1)
Substitute in the values of x and y
into the equation to find the slope.
m=(−8−(5)) / (5−(5))
Finding the slope m.
Undefined
x=5
Step-by-step explanation:
Answer:
m = undefined
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Coordinates (x, y)Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (5, 5)
Point (5, -8)
Step 2: Identify
(5, 5) → x₁ = 5, y₁ = 5
(5, -8) → x₂ = 5, y₂ = -8
Step 3: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute in points [Slope Formula]: [tex]\displaystyle m=\frac{-8-5}{5-5}[/tex][Slope] Subtract: [tex]\displaystyle m=\frac{-13}{0}[/tex]Here we see that we have a number divided by 0. Since we know that we cannot divide any number by 0, our slope will be undefined. This will be a vertical line on a Cartesian plane of x = 5.
What is the importance of polynomial functions and how this real life applications improve or contribute to the value of life
Answer:
What is the importance of polynomial functions?
Polynomials are an important part of the "language" of mathematics and algebra. They are used in nearly every field of mathematics to express numbers as a result of mathematical operations. Polynomials are also "building blocks" in other types of mathematical expressions, such as rational expressions.
How these real-life applications improve or contribute to the value of life?
Since polynomials are used to describe curves of various types, people use them in the real world to graph curves. Combinations of polynomial functions are sometimes used in economics to do cost analyses, for example. Engineers use polynomials to graph the curves of roller coasters and bridges.
While growing bacteria in a laboratory Petri dish, a scientist notices the number of bacteria over time. The observations are shown in the table.
Number of bacteria
Number of minutes
from initial state
0 4
5 128
10 4096
15 131072
What function can be used to describe the number (n) of bacteria after 2 minutes?
Answer:
The function that can be used to describe the number (n) of bacteria after 2 minutes is;
[tex]P = 4 \cdot e^{\left(\dfrac{ln(32)}{5} \times 2\right)} \approx 4 \cdot e^{\left(0.693\times 2\right)}[/tex]
Step-by-step explanation:
The data in the table are presented as follows;
Number of bacteria; 4, 128, 4,096, 131,072
Number of minutes from initial state; 0, 5, 10, 15
The general equation for population growth is presented as follows;
[tex]P = P_0 \cdot e^{r\cdot t}[/tex]
Where;
P = The population after 't' minutes
P₀ = The initial population
r = The population growth rate
t = The time taken for the growth in population numbers
At t = minutes. we have;
[tex]4 = P_0 \cdot e^{r\times0} = P_0[/tex]
∴ P₀ = 4
At t = 5, we have;
[tex]128 = 4 \cdot e^{r\times 5}[/tex]
[tex]\therefore e^{r\times 5} = \dfrac{128}{4} = 32[/tex]
[tex]ln\left(e^{r\times 5}\right) = ln(32)[/tex]
∴ r × 5 = ㏑(32)
r = ln(32)/5 ≈ 0.693
The number (n) of bacteria after 2 minutes is therefore;
[tex]P = 4 \cdot e^{\left(\dfrac{ln(32)}{5} \times 2\right)} \approx 4 \cdot e^{\left(0.693\times 2\right)}[/tex]
A group of 10 people is choose a chairperson and vice-chairperson. They put all 10 peoples names into a bar. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and Vice-chair are there ?
Answer:
90
Step-by-step explanation:
A group of 10 people is choose a chairperson and vice-chairperson. They put all 10 peoples names into a bar. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and Vice-chair are there ?
This is calculated using the Permutation formula
nPr = n!/(n - r)!
Where:
n = 10 people
r = 2 = 2 positions to be filled , Chairman and Vice chairman
Hence:
10P2 = 10!/(10 - 2)!
= 90 ways
A tutor works with a group of students. She charges $40 for the tutoring session plus $30 for each student in the group.
What's the equation?
i need help please asap
Answer:
4$ per minute. You make 20 dollars in 5 minutes so 20 divided by 5 is 4.
2x - 8 = 12 - 4x
solve for variable
Answer:
x = [tex]\frac{10}{3}[/tex] or [tex]3\frac{1}{10}[/tex]
Step-by-step explanation:
2x - 8 = 12 - 4x
1) Add 8 on boths sides:
2x - 8 + 8 = 12 - 4x + 8
2x = 20 - 4x
2) Add 4x to both sides:
2x + 4x = 20 - 4x + 4x
6x = 20
3) Divide 6 on both sides
[tex]\frac{6x}{6} = \frac{20}{6}[/tex]
x = [tex]\frac{10}{3}[/tex] or [tex]3\frac{1}{10}[/tex]
The distribution of the number of blocks a young child can stack before their tower falls is approximately Normally distributed with a mean of 12.7 blocks and a standard deviation of 1.4 blocks. If 6 of the child’s towers are randomly selected, what is the probability that the mean number of blocks is more than 11 blocks? 0.0015 0.1123 0.8877 0.9985
Answer:
0.9985
Step-by-step explanation:
6 to the 2 power −2(5+1+3)
Answer:
18
Step-by-step explanation:
Solve for n. 5^{n} = 5^[11] x 5^ [3]
Answer:
n = 14
Step-by-step explanation:
[tex]5^n = 5^{11} * 5^3[/tex]
simplify the right side
[tex]5^n = 5^{14}[/tex]
Then you can easily see that
[tex]n = 14[/tex]
Answer:
n = 14
Step-by-step explanation:
[tex]a^{x}*a^{y}=a^{x+y}\\\\5^{n} = 5^{11}*5^{3}\\\\5^{n} = 5^{11+3}\\\\5^{n}=5^{14}\\\\[/tex]
n = 14