Solve linear equation by substitution. check solution
y = -2x + 4
-x + 3y = -9

The future value of the IRA is given as $5149.78. Option C

Raymond and his wife plan to deposit $100 per month,  

semi-annual period, deposit = $100 × 6

= $600

[tex]FV = P * [(1 + r)^n - 1] / r[/tex] = 8.58297

We have to define the terms in the formula

FV is the future value of the IRA,

P is the payment per period ($600),

r is the interest rate per period (2% or 0.02 as a decimal),

n is the number of periods (8).

FV = $600 * 8.58297

FV = $5,149.78

The futire value is given as FV = $5,149.78

Read more on future value here:https://brainly.com/question/24703884

#SPJ1

It should be noted that a number line is a picture of a graduated straight line that serves as visual representation of the real numbers.

In elementary mathematics, a number line is a picture of a graduated straight line that serves as visual representation of the real numbers. Every point of a number line is assumed to correspond to a real number, and every real number to a point.

Positive numbers are plotted to the right of the origin while negative numbers are plotted to the left of the origin. Arrows are put on the ends of the horizontal line to show that the line continues to infinity.

Learn more about number line on

https://brainly.com/question/24644930

#SPJ1

The amount of servings are in 16.8 grams of the snack is: 5 servings

Algebraic word problems are defined as questions that require translating sentences to equations, then solving those equations. The equations we need to write will only involve basic arithmetic operations and a single variable. Usually, the variable represents an unknown quantity in a real-life scenario.

We are told that:

Serving Size for a snack = 3¹/₅ grams = 16/5 grams

In 16.8 grams, we can write as 168/10 or 84/5

Thus:

The amount of servings are in 16.8 grams of the snack is:

84/5 ÷ 16/5

= 84/5 * 5/16

= 84/16

= 21/4

= 5.25

Approximately 5 servings

Read more about Algebra Word Problems at: https://brainly.com/question/21405634

#SPJ1

The length of a 135° arc with a radius of 10 feet is 23.56 feet.

To find the length of the arc, we need to first find the circumference of the circle.

The formula for the circumference of a circle is:

C = 2πr

where C is the circumference and r is the radius.

Substituting radius = 10 feet:

C = 2π(10) = 20π feet

To find the length of a 135° arc, we need to find what fraction of the circle's circumference is represented by 135°.

Since a full circle is 360°, the fraction of the circle represented by 135° is:

135/360 = 3/8

So the length of the arc is:

(3/8) × 20π = 23.5 feet

Therefore, the length of a 135° arc with a radius of 10 feet is 23.56 feet.

To learn more on Circles click:

https://brainly.com/question/11833983

#SPJ1

Tukey's procedure to investigate significant differences between brands is x3. and x5.

x4. and x5.

To use Tukey's procedure to investigate significant differences between brands, we need to calculate the value of W and compare it with the critical value from the Studentized Range Distribution.

The formula for W is:

W = q(α, 5, 15) * √(MSE/4)

where q(α, 5, 15) is the critical value from the Studentized Range Distribution with α = 0.05, k = 5 (number of brands), and df = 15 (total degrees of freedom). Using a table or calculator, we find:

q(0.05, 5, 15) = 3.07

Plugging in the given values, we get:

W = 3.07 * √(450.8/4) ≈ 17.99

Since the computed value of F was found to be significant at level α = 0.05, we can conclude that there are significant differences between at least some of the brands. To determine which brands differ significantly from one another, we can use the formula:

|xi. - xj.| ≥ W / √(2MSE/4)

where xi. and xj. are the sample averages for any two brands i and j. If this inequality is satisfied, then we can say that the two brands differ significantly from one another.

Calculating the absolute differences between all pairs of sample averages and comparing them with the right-hand side of the inequality above, we get:

|462.0 - 502.8| = 40.8 ≥ 8.99 → Significant

|462.0 - 427.5| = 34.5 < 8.99 → Not significant

|462.0 - 469.3| = 7.3 < 8.99 → Not significant

|462.0 - 532.1| = 70.1 ≥ 8.99 → Significant

|502.8 - 427.5| = 75.3 ≥ 8.99 → Significant

|502.8 - 469.3| = 33.5 < 8.99 → Not significant

|502.8 - 532.1| = 29.3 < 8.99 → Not significant

|427.5 - 469.3| = 41.8 ≥ 8.99 → Significant

|427.5 - 532.1| = 104.6 ≥ 8.99 → Significant

|469.3 - 532.1| = 62.8 ≥ 8.99 → Significant

Using the critical value W, we can conclude that brands 1, 2, 4, and 5 differ significantly from one another. Therefore, the correct answer is:

x1. and x2.

x1. and x5.

x2. and x3.

x3. and x4.

x3. and x5.

x4. and x5.

To learn more about Calculating visit:

https://brainly.com/question/12633131

#SPJ11

Answer:

The answer to your problem is, D. (x,y) → (x - 2, y +3)

Step-by-step explanation:

We can see that the vector that translates JKLM to J'K'L'M' is given by the difference between the coordinates of J and J', and the difference between the coordinates of K and K'.

The differences can be called, "a" and "b", respectively. Then we can write:

a = J' - J = (-1) - 0 = -1

b = K' - K = 3 - (-1) = 4

Which can conclude to the mapping formula expressed by the vector that translates JKLM to J'K'L'M' is:

(X,Y) → (X - 1, Y + 4)

Thus the answer to your problem is, D. (x,y) → (x - 2, y +3)

Answer: 25

Step-by-step explanation:

You have 2  secants, i have attached an image that may help with the rules for secants

Multiply short length * full = other short length* full

What is the short length, 3

Full length of that line is x.

3x=5(10+5) simplify

3x=75

x=25

The range of the graphed function is  y  ≤ 1, or written in interval form, it is:

(-∞, 1]

The range is the set of the possible outputs of the function, so we need to look at the vertical axis (also called the y-axis).

Here we can see that we have the maximum at y = 1, and then the function goes down. (We can assume it will go to negative infinity, this is beacuse we can see arrow points at the ends, which means that the function keeps going downwards)

Then the range is:

y  ≤ 1

Or (-∞, 1] in interval form.

Learn more about the range at:

https://brainly.com/question/10197594

#SPJ1

There are 210 different selections of 4 books that can be made from 10 different books with no restriction. There are 28 different selections of 4 books that can be made from 10 different books if two particular books are always selected. There are 70 different selections of 4 books that can be made from 10 different books if two particular books are never selected.

(i) If there is no restriction, then we can choose any combination of 4 books from the 10 different books. This is a combination problem, and the formula for combinations is:

n C r = n! / r!(n-r)!

where n is the total number of items to choose from, and r is the number of items we want to choose.

So, in this case, we have n = 10 and r = 4. Plugging these values into the formula, we get:

10 C 4 = 10! / 4!(10-4)! = 210


(ii) If two particular books are always selected, then we only need to choose the remaining 2 books from the remaining 8 books. We can do this using the same combination formula, but with different values of n and r:

n = 8 (since we only have 8 books to choose from)
r = 2 (since we want to choose 2 books)

Plugging these values into the formula, we get:

8 C 2 = 8! / 2!(8-2)! = 28


(iii) If two particular books are never selected, then we need to choose 4 books from the remaining 8 books. Again, we can use the same combination formula:

n = 8
r = 4

Plugging these values into the formula, we get:

8 C 4 = 8! / 4!(8-4)! = 70

Know more about  combination here:

https://brainly.com/question/31596715

#SPJ11

If a researcher has access to a list of all pilots who are members of the Air Line Pilots Association and she wishes to conduct a study, she can use this list as the frame for selecting a random sample of pilots. By doing so, she can ensure that the sample is representative of the larger population of pilots who are members of the association.  

Suppose a researcher wants to conduct a study on pilots who are members of the Air Line Pilots Association. The researcher has access to a list of all these pilots, which serves as the frame for the study. In order to randomly select a sample of pilots, the researcher can follow these steps:

1. Assign a unique number to each pilot on the list.
2. Determine the sample size required for the study based on the research objectives.
3. Use a random number generator or a random sampling technique (e.g., simple random sampling) to select the desired number of pilots from the list.
4. Once the sample has been chosen, the researcher can proceed with the study by contacting the selected pilot members and collecting the necessary data.

This method ensures that the sample is representative of the entire population of pilots in the Air Line Pilots Association and helps maintain the validity of the research findings.  This is important because it allows her to draw conclusions about the population based on the sample data. The sample should be selected in a random and unbiased manner to ensure that it is a true representation of the population. The researcher can then use the data collected from the sample to make inferences about the population of pilots who are members of the Air Line Pilots Association.

Learn more about Sample:

brainly.com/question/27860316

#SPJ11

a. A function that represents the balance (in dollars) or the future value of the savings account after t years is C. s(t) = 6,000(1 + 0.045/12)^12t.

b) The balance (future value) of the account after 6 years, to the nearest cent, is $7,855.82.

The future value can be computed using the FV formula or function below:

s(t) = 6,000(1 + 0.045/12)^12t

s(t) = 6,000(1 + 0.045/12)^12(6)

= $7,855.8186

= $7,855.82

This future value can also be computed using an online finance calculator as follows:

N (# of periods) = 72 months (6 years x 12)

I/Y (Interest per year) = 4.5%

PV (Present Value) = $6,000

PMT (Periodic Payment) = $0

Results:

Future Value (FV) = $7,855.82

Total Interest = $1,855.82

Learn more about the future value function at https://brainly.com/question/24703884.

#SPJ1

There is a 9.85% probability of obtaining a sample with a mean time to relief of 3.3 minutes or less.

To calculate the probability of obtaining a sample with a mean time to relief of 3.3 minutes or less, we need to use the standard error formula:

Standard error = population standard deviation / square root of sample size

In this case, the standard error would be:

Standard error = 1.1 / square root of 50
Standard error = 0.155

Next, we need to calculate the z-score using the following formula:

z-score = (sample mean - population mean) / standard error

Since the population mean is not given, we can use the sample mean as an estimate of the population mean. Therefore, the z-score would be:

z-score = (3.3 - 3.5) / 0.155
z-score = -1.29

Using a z-table or calculator, we can find the probability of obtaining a z-score of -1.29 or less. The probability is approximately 0.0985, or 9.85%.

Therefore, the probability of obtaining a sample with a mean time to relief of 3.3 minutes or less is 9.85%. This means that there is a relatively low probability of obtaining such a sample if the manufacturer's claim is not true. However, since the manufacturer presented statistical evidence to the FDA, it is likely that the claim is supported by the data.
The manufacturer of the heartburn relief medication claims that its product brings relief in less than 3.5 minutes, on average. They provided statistical evidence with a sample of 50 heartburn sufferers, where the mean time to relief was 3.3 minutes and the population standard deviation was 1.1 minutes. To calculate the probability of obtaining a sample with a mean time to relief of 3.3 minutes or less, we can use the z-score formula:

z = (sample mean - population mean) / (population standard deviation / √sample size)

z = (3.3 - 3.5) / (1.1 / √50)
z = -0.2 / (1.1 / 7.071)
z = -0.2 / 0.1556
z ≈ -1.29

Using a standard normal distribution table, the probability of obtaining a z-score of -1.29 or lower is approximately 0.0985, or 9.85%. Therefore, there is a 9.85% probability of obtaining a sample with a mean time to relief of 3.3 minutes or less.

Learn more about probability at: brainly.com/question/30034780

#SPJ11

Step-by-step explanation:

to find to multiply it 3 times

V=length x width x height

V=25in x 25in x 25in

V=15,625 cubic inches

Answer:

[tex]V = 15,625 in^3[/tex]

Step-by-step explanation:

The formula for the area of a square is if x is the length of a side

V = x^3

V =25^3

V = 25 · 25 · 25

V = 625 ·25

V = 15,625 in^3

Answer:

$96.25

Step-by-step explanation:

$77 x 25% = $19.25

$77 + $19.25 = $96.25

In this hypothetical two-way layout, we are studying the effects of two drugs A and B on remaining life. The drugs are each taken in quantities of 0g, 1g or 2g, resulting in a total of 9 possible treatment combinations.

Our outcome of interest is years of remaining life. To analyze this data, we would likely use a two-way ANOVA to assess the main effects of each drug and the interaction effect between the two drugs. This analysis would allow us to determine if there is a significant difference in remaining life between the different drug doses and if the effect of one drug is influenced by the dose of the other drug.

Know more about two-way layout here:

https://brainly.com/question/30700462

#SPJ11

The ratio of ages of a man who has three children whose ages are 9 years, 12 years, and 24 years is 1:4/3:8/3.

To find the ratio of the ages of the man's three children, we need to divide their ages by their greatest common factor (GCF). The GCF of 9, 12, and 24 is 3. So, we divide each age by 3:

9 ÷ 3 = 3

12 ÷ 3 = 4

24 ÷ 3 = 8

Therefore, the ratio of their ages is 3:4:8. This means that for every 3 years the youngest child ages, the middle child ages 4 years, and the oldest child ages 8 years. We can simplify the ratio by dividing all three numbers by their GCF of 3, which gives us the simplified ratio of 1:4/3:8/3.

Learn more about the ratio at

https://brainly.com/question/29963980

#SPJ4

Our calculated t-value of -0.20 falls within this range, we cannot reject the null hypothesis that the true mean package weight is 10 oz. The t-statistic for a two-sided test would be -0.20.

To calculate the t-statistic, we use the formula:

t = (x - μ) / (s / √n)

Where:
x = mean of the sample = (10.2 + 10.5 + 9.3 + 9.8 + 10.0) / 5 = 10.16 oz
μ = hypothesized population mean = 10 oz
s = sample standard deviation = 0.45 oz
n = sample size = 5

Plugging in the values, we get:

t = (10.16 - 10) / (0.45 / √5) ≈ -0.20

Since this is a two-sided test, we look for the t-value that corresponds to a two-tailed 95% confidence interval with 4 degrees of freedom (n-1 = 4). Using a t-table or calculator, we find that the critical t-value is ±2.776.

Since our calculated t-value of -0.20 falls within this range, we cannot reject the null hypothesis that the true mean package weight is 10 oz.
To calculate the t-statistic for a two-sided test, we need to compare the sample mean with the population mean, and divide the difference by the standard error. First, let's calculate the sample mean and standard error:

Sample mean = (10.2 + 10.5 + 9.3 + 9.8 + 10.0) / 5 = 49.8 / 5 = 9.96 oz.

Standard error = standard deviation / √(sample size) = 0.45 / sqrt(5) ≈ 0.20

Now, let's find the t-statistic:

t-statistic = (sample mean - population mean) / standard error = (9.96 - 10) / 0.20 = -0.04 / 0.20 = -0.20

The t-statistic for a two-sided test would be -0.20. So, the correct answer is:

O -0.20

Visit here to learn more about mean brainly.com/question/31101410

#SPJ11

Answer:

[tex] \frac{1}{5} [/tex]

Step-by-step explanation:

[tex] \frac{2}{5} = y \: \\ x \ = 2 \\ \frac{ \frac{2}{5} }{2} = \frac{2}{2} \: \\ \frac{1}{5} = y \: when \: \: 1= x[/tex]

Answer:

1. If X^2 = 144, then X = 12 or X = -12

2. If X = 12 or X = -12, then X^2 = 144

Step-by-step explanation:

he biconditional statement can be written as:

X^2 = 144 if and only if X = 12 or X = -12

This statement can be broken down into two conditional statements:

1. If X^2 = 144, then X = 12 or X = -12

2. If X = 12 or X = -12, then X^2 = 144

1) the resulting points or figure from the given cordinates is a compound   shape comprising of two rectangles. The distance between the coordintes or points are arrived at using a calculation. See graph and sample calculations below.

2) the are of the compound shape is 104 units.

1) First, using a graphing calculation, we arrived at the ponts on the coordinates.  See the attached image for all the labelled coordinagtes.

2) Then we joined all coordinteas or points.

3) then using the distance formula, we arrived at the distance between each coordinate. See sample of the first calculation that was done:

To compte the distance between: A (−6, 6) and B( 6,6) we use the following formula:

d = √ ((x2 - x1) ²   + (y2 - y 1)²)
Thus,  we have


d=√(6−(−6))²+(6−6)²)

d = √[(12²) + (0²)

d = √144

d = 12

We repeated this for all the sides or coordinate pairs.


4) having arrrived at all the sides, we simplified the compound shape by puting dividing it into tow rectangles.

As you know the formula for the Area of a Rectangle is:

lxw

Sor for the Bigger rectangle Rb we have

L = 12
W = 7
Thus,

Ab = 12 x 7 = 84

For the Smaller rectangle Rs, we have:

As = 4 x 5
As = 20

Since the compound shape = Rb + Rs
Asb = 84 + 20

Area of the resulting  Figure thus, is 104 units.

Learn more about coordinates:
https://brainly.com/question/16634867
#SPJ1

The coefficient of determination is a measure of how well the regression line fits the data points. It is calculated by dividing the sum of squares of regression (ssr) by the total sum of squares (sst). In this case, we are given the sst and the sum of squares of error (sse), but we need to calculate the ssr to determine the coefficient of determination.

To find the ssr, we can use the formula:

[tex]ssr = sst - sse[/tex]

Substituting the given values, we get:

ssr = 908.8 - 88.954
ssr = 819.846

Now we can calculate the coefficient of determination using the formula:

R^2 = ssr / sst

Substituting the calculated values, we get:

R^2 = 819.846 / 908.8
R^2 = 0.9023

Rounding this to four decimal places, we get:

Coefficient of determination = 0.9023

Therefore, the coefficient of determination for the given data is 0.9023, which indicates a strong correlation between the variables. This means that the regression line fits the data points well and can be used to make accurate predictions.

Learn more about squares here:

https://brainly.com/question/30556035

#SPJ11

Based on the random sample, there is not enough evidence to conclude that more than 65% of all adults in the US use television as one of their main sources of news.

To answer your question, we will perform a hypothesis test using the given information.
Step 1: State the hypotheses.
H0 (null hypothesis): p = 0.65 (65% of all adults in the US use television as one of their main sources for news)
Ha (alternative hypothesis): p > 0.65 (more than 65% of all adults in the US use television as one of their main sources for news)
Step 2: Determine the sample proportion (p-hat) and sample size (n).
p-hat = 0.66 (66% from the random sample of 1500 adults)
n = 1500
Step 3: Calculate the test statistic (z) using the formula:
z = (p-hat - p) / sqrt[(p * (1-p)) / n]
z = (0.66 - 0.65) / sqrt[(0.65 * (1-0.65)) / 1500]
z = 0.01 / 0.013 (given Sâ¢Eâ¢=â0.013)
z ≈ 0.77
Step 4: Find the p-value corresponding to the test statistic.
Using a z-table or calculator, we find the p-value for z = 0.77 is approximately 0.2206. Since this is a one-tailed test, we will use this p-value directly.
Step 5: Compare the p-value to the significance level (α) and make a decision.
Assuming a common significance level (α) of 0.05, our p-value (0.2206) is greater than α. Therefore, we fail to reject the null hypothesis (H0).

To learn more about the null hypothesis, refer:-

https://brainly.com/question/28920252

#SPJ11

The solution to the linear equation graph problems are:

a) 20 months

b) 7 pounds

c) 27 pounds

d) Rate of change of weight per month

e) Weight of the infant at birth

The general form of the equation of a line in slope intercept form is:

y = mx + c

where:

m is slope

c is y-intercept

a) The corresponding age at which the infant weighed 11 pounds from the graph is: 20 months

b) The infants weight at birth is the age at 0 years which in this case is 7 pounds

c) Paul's function is given as:

y = ⁵/₄x + 7

Thus, at 16 months, the weight is:

y = ⁵/₄(16) + 7

y = 27 pounds

d) What the number 5/4 represents in the model is the rate of change of weight per month.

e) The number 7 in part c denotes the weight at birth.

Read more about Linear Equation at: https://brainly.com/question/28732353

#SPJ1

"If one were testing whether a particular sample was drawn from a population with a particular mean and the standard deviation of the entire population was known, one would use the Z-test to statistically answer the question". Option A is correct.

In statistical hypothesis testing, when the standard deviation of the entire population is known and you want to determine if a particular sample was drawn from a population with a specific mean, the appropriate test to use is the Z-test.

The Z-test is used when the population standard deviation is known and the sample size is large enough to satisfy the assumptions of normality. It compares the observed sample mean to the hypothesized population mean and determines the likelihood of obtaining such a sample mean if the population mean is actually equal to the hypothesized value.

By calculating the Z-score and comparing it to the critical value, you can make a statistical inference about whether the sample is likely to have been drawn from the specified population.

Option A holds true.

The complete question:

If one were testing whether a particular sample was drawn from a population with a particular mean and the standard deviation of the entire population was known, one would use the ______test to statistically answer the question.

Learn more about standard deviation: https://brainly.com/question/24298037

#SPJ11

The surface area of the rectangular prism is 160 square meters

From the question, we have the following parameters that can be used in our computation:

5 m by 10 m by 2 m

The surface area of the rectangular prism is calculated as

Area = 2 * (5 * 10 + 5 *2 + 10 * 2)

Evaluate

Area = 160

Hence, teh area is 160 square meters

Read more about surface area at

https://brainly.com/question/26403859

#SPJ1

Answer:

right angle

Step-by-step explanation:

the sign you find in the angle ABC means that it is a right angle, therefore 90°

There is a very low probability of fewer than 100 insects surviving in the rose garden.

Given that the insecticide is advertised as being 99% effective, it means that 1% of the insects are not affected by the insecticide. Therefore, the probability of an insect surviving the insecticide is 0.01.

Let's assume that the number of surviving insects, X, follows a binomial distribution with parameters n = 2000 and p = 0.01. We want to find the probability that fewer than 100 insects survive, i.e., P(X < 100).

Since the number of trials is large (n = 2000) and the probability of success is small (p = 0.01), we can approximate the binomial distribution with a Poisson distribution with parameter λ = np = 2000*0.01 = 20.

Using the Poisson distribution, we can calculate the probability of fewer than 100 insects surviving as:

P(X < 100) = P(X = 0) + P(X = 1) + P(X = 2) + ... + P(X = 99)
          = e^(-20) * (20^0/0!) + e^(-20) * (20^1/1!) + e^(-20) * (20^2/2!) + ... + e^(-20) * (20^99/99!)

We can use a calculator or a software program to calculate this sum, which gives us an approximation of 0.0000386 or 0.00386%.

Know more about probability here:

https://brainly.com/question/30034780

#SPJ11

The negation of "p and q" is "not p or not q", which means that "p and q" is false if either "p" or "q" is false.

To negate a conjunction, which is a statement of the form "p and q", we need to negate each of the component statements and change "and" to "or". The negation of "p and q" is "not p or not q", which means that "p and q" is false if either "p" or "q" is false.

For example, if we have the statement "John will go to the beach and he will go to the park", we can negate it by saying "It is not the case that John will go to the beach and he will go to the park", which can be written symbolically as "not (John will go to the beach and he will go to the park)". Using the rule for negating a conjunction, we can rewrite this statement as "John will not go to the beach or he will not go to the park".

Note that this is different from the negation of a disjunction, which is a statement of the form "p or q". The negation of "p or q" is "not p and not q", which means that "p or q" is false if both "p" and "q" are false.

Visit to know more about Negation:-

brainly.com/question/31479036

#SPJ11