If f(x)=3x-7, find f(x)=2

Linear regression is a statistical tool used in predictive analytics to identify the relationship between a dependent variable and one or more independent variables.

Linear regression is a statistical technique used in predictive analytics to identify the relationship between a dependent variable and one or more independent variables. It is used to predict future outcomes by analyzing data from the past. It works by fitting a linear equation to the data, which is then used to estimate the value of the dependent variable for any given combination of values of the independent variables. The linear equation is constructed by finding the line of best fit through the data points. Linear regression can be used to identify trends and patterns in the data, and to make predictions about future outcomes. It is a powerful tool for predicting the future, and can be used to make informed decisions about how to best use resources.

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9514 1404 393

Answer:

  b.  2692 ft

Step-by-step explanation:

The relation of interest between the sides of the right triangle is ...

  Tan = Opposite/Adjacent

Using the given numbers, that is ...

  tan(32°) = (building height)/(4300 ft)

Multiplying by 4300 ft, we get ...

  building height = (4300 ft)·tan(32°) ≈ 2686.9 ft

This is the height above the observer's eyes, so the height of the building above the ground is ...

  2687 +5 = 2692 . . . . feet

The building is 2692 feet tall.

Answer:

A. 524m^3

Step-by-step explanation:

Formula for volume of sphere:

\(V = \frac{4}{3} \pi r^3\)

If we use 3.14 for pi, we get:

V = 4/3(3.14)(5)^3

V = 523.33

Answer:

enlargement ; 2

Step-by-step explanation:

dilation is change in the size of the figure.

in the given scenario, figure's size is increasing so dilation is called enlargement and scale factor must be greater than 1.

scale factor = dimension of new shape / dimension of original shape

let's calculate the difference in terms of boxes of both figures to calculate the scale factor,

scale factor = 6/3

thus, in the given dilation we have enlargement of 2

Answer:

the two factors are (x + 1 ) , (x - 5)

Step-by-step explanation:

The factors of the quadratic equation x² - 4x - 5 is (x + 1) (x - 5)

A quadratic equation is an algebraic expression whose power is raised to the second degree. The solution of a quadratic equation usually leads to a pair of two factors.

From the given question, we are going to look for two numbers:

Thus, the expansion of the quadratic equation will lead to the following factors:

= (x + 1) (x - 5)

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Answer:

side c-10.35 Angle a-50.88 Angle B-94.12

Step-by-step explanation:

I found the answers on a khan academy thing. I just took the quiz and got a 100%

The  solution of the given system of equations is (8, -1). of the given system of equations is (8, -1).

One method to solve the given system of equations is substitution:

- Solve one of the equations for one of the variables (e.g., x = 9 + y from the second equation).

- Substitute the expression for the variable into the other equation.

- Solve the resulting equation for the remaining variable.

- Substitute the value for the remaining variable back into one of the original equations to find the value of the other variable

Using this method with the given equations

- x - y = 9 -> x = 9 + y

- 3x + 2y = 22 -> 3(9 + y) + 2y = 22

- Simplifying and solving for y: 27 + 5y = 22 -> 5y = -5 -> y = -1

- Substituting y = -1 into x = 9 + y: x = 8

To check this solution, we can substitute these values back into both original equations and confirm that they are true statements.

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Answer:

41

Step-by-step explanation:

Look

Answer:

I am a 4th grader I don't know

Step-by-step explanation:

Each employee makes 35 x 7.60 = 266 per week.

105 employees x 266 = 27,930 per week total pay.

27930 x 10 % = 27930 x 0.10 = 2,793 more per week.

Answer:

(b) 91

Step-by-step explanation:

The probability of an item scanning correctly is 98.9%, so the probability of an item scanning incorrectly is 1 - 98.9% = 1.1%.

The expected number of items to buy to find one that scans incorrectly is 1 / 1.1% = 91. This means that you would expect to buy 91 items on average to find one that scans incorrectly.

Rounding up to the next integer, the answer is 92. Therefore, the correct answer is (b) 91.

The measure of angle BCA is 81 degrees.                                            

The answer is:

5/4

Work/explanation:

Let's work out the slope of the line.

The equation is in y = mx + b form where m = slope; b = y intercept.

Similarly, in y=5/4x - 7/4, the slope is 5/4.

Answer:

of course 0

Step-by-step explanation:

because it doesn't have any value in its first equation

Answer:

i think the answer is d.

Step-by-step explanation:

tell me if this is wrong.

Answer:

D

Step-by-step explanation:

at 2 hours car b is 120 miles east of Johnston and since car A is 130 miles east that means car a is 10 miles east from car b

Answer: the answer is D. Car A was 10 miles east of car B

Step-by-step explanation: I hope this helps.

The number of tapes cut is 3 pieces.

He has a roll of tape that is 4 1/2 yard long.

He cuts the tape into pieces that are each 3/2 yard long.

Therefore, the number of roll of tape cut can be calculated as follows:

Initial length of the tape in yard = 4 1 / 2 = 9 / 2 yards

Length of the tape cut in yard = 3  /2 yards

Hence,

number of tape cut = 9 / 2 ÷ 3 / 2

number of tape cut =  9 / 2 × 2 / 3

number of tape cut = 9 / 3

number of tape cut =  3 pieces

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Answer:

5

Step-by-step explanation:

All of the x values are 5, so the domain is 5

Answer:

23 points

Step-by-step explanation:

An inverse variation is the one in which the product of x and y is a constant:

We can find the value of this constant by replace x and y for the given values:

Now, replace k in the initial equation and then solve for y:

It means that the relationship is:

The graph of this relationship is:

Answer:

Step-by-step explanation:

Let the number of 2 liter cans be x and 5 liter cans be y.

Number of cans:

Amount of paint:

Solve the system by elimination, double the first equation and subtract from the second one:

Find x:

To calculate a 95% confidence interval for the mean weight per apple based on the given data, we need to determine which test should be used and then calculate the interval.

The appropriate test depends on the sample size and whether the population standard deviation is known.

5. Test selection: Since the population standard deviation is known in this case and the sample size is large (n=49), the appropriate test to use is the one sample z-test for means.

Confidence interval calculation: To calculate the confidence interval, we can use the formula:

Confidence interval = sample mean ± (z-value * (standard deviation / √sample size))

In this case, the sample mean is 122.5 grams, the standard deviation is 12 grams, and the sample size is 49. The z-value for a 95% confidence level is approximately 1.96 (obtained from a standard normal distribution table).

Calculating the confidence interval:

Confidence interval = 122.5 ± (1.96 * (12 / √49))

Confidence interval = 122.5 ± (1.96 * 1.714)

Confidence interval ≈ [119.68, 125.32]

Therefore, the correct answers are B (One sample z-test for means), A ([119.68, 125.32]), and D (We are 95% certain that the population mean falls within the interval) for problems 4, 5, and 6, respectively.

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Answer:

I think it's (A) the image Transformation 1 has an area that is 4 times greater than the image in Transformation 2.

Step-by-step explanation:

if not then correct me plz

a. The linear equation for the number of immigrants is y = 16,033.444t - 16,764,061.4.

b. The predicted number of immigrants admitted to the country in 2014 is approximately 1,825,753.

c. The validity of using this equation to model the number of immigrants throughout the entire 20th century is questionable due to the negative y-intercept, which implies negative immigrants in the year 1900.

a. Assuming a linear change in immigration, we can write the equation expressing the number of immigrants, y, in terms of t, the number of years after 1900, as:

y = mt + b

where m represents the rate of change (slope) and b represents the initial value (y-intercept).

To find the values of m and b, we can use the given data points (1950, 241,832) and (2004, 1,107,638).

Let's calculate the slope (m):

m = (change in y) / (change in t)

m = (1,107,638 - 241,832) / (2004 - 1950)

m = 865,806 / 54

m ≈ 16,033.444

Now, let's substitute one of the data points (1950, 241,832) into the equation to find the value of b:

241,832 = (16,033.444)(1950) + b

b = 241,832 - (16,033.444)(1950)

b ≈ -16,764,061.4

Therefore, the linear equation for the number of immigrants is:

y = 16,033.444t - 16,764,061.4

b. To predict the number of immigrants admitted to the country in 2014, we need to find the value of y when t = 2014 - 1900 = 114:

y = 16,033.444(114) - 16,764,061.4

Calculating the expression:

y ≈ 1,825,753.216

Therefore, the predicted number of immigrants admitted to the country in 2014 is approximately 1,825,753.

c. Considering the value of the y-intercept in the equation (-16,764,061.4), it suggests that in the year 1900 (t = 0), there were already negative immigrants, which does not make sense in the context of immigration. Therefore, using this linear equation to model the number of immigrants throughout the entire 20th century may not be valid. It is important to consider the limitations of the linear model and the historical context of immigration patterns.

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Complete Question:

In 1950, there were 241,832 immigrants admitted to a country. In 2004, the number was 1,107,638

a. Assuming that the change in immigration is linear, write an equation expressing the number of immigrants, y, in terms of t, the number of years after 1900

b. Use your result in part a to predict the number of immigrants admitted to the country in 2014

c. Considering the value of the y-intercept in your answer to part a, discuss the validity of using this equation to model the number of immigrants throughout the entire 20th century.

This method is not appropriate because of the mathematical sign separating the terms. It is supposed to be minus not a plus sign

The expression by factoring out the greatest common factor is 4(x^2-9)

Given the expression 4x^2 + 36. According to the difference of two square,

a^2 - b^2 = (a-b)(a+b)

For the expression 4x^2 + 36, this can also be written as:

= (2x)^2 + 6^2

= (2x+6)(2x-6)

This method is not appropriate because of the mathematical sign separating the terms. It is supposed to be minus not a plus sign

Using the factoring method:

4x^2 = 4 * x^2

36 = 4 * 9

Since 4 is common to both of the terms, hence;

4x^2 + 36 = 4(x^2+9)

Hence the expression by factoring out the greatest common factor is 4(x^2-9)

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Answer:

300 jumping jacks

Step-by-step explanation:

120 ÷ 2 = 60 jumping jacks per minute

60 × 5 = 300 jumping jacks

Sam can do 300 jumping jacks in 5 minutes.

Hope that helps.

Answer:

60

Step-by-step explanation:

120 / 2 = 60 (jumping jacks per minute)

60 * 5 = 300

Best of Luck!