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NO LINKS OR ANSWERING WHAT YOU DON'T KNOW?1. Suppose y varies inversely with x, and y = 25 when x = 1/5. What is the value of y when x = 5?

a. 15
b. 5
c. 25
d. 1

2. Suppose y varies inversely with x, and y = a when x = a^2. What inverse variation equation related x and y?

a. y = a^2/x
b. y = a^3/x
c. y= a^3x
d. y = ax

3. Suppose y varies inversely with x, and y = 3 when x = 1/3. What is the inverse variation equation that relates x and y?

a. y = 1/x
b. y =x
c. y = 3x
d. y = 3/x

Answers

Answer 1
Answer:

Answer:

1. D. 1

2. B. y=a³/x

3. A. y=1/x

Step-by-step explanation:

too long to give te explanations but they're there in the attachments

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(1 point) The number of households with cable TV service in a certain community, N, begins at only 55 households and has seen a fivefold increase every 17 years. Give the constants a, b, and T so that N is represented by a function of the form N=abt/T, where t is the time in years since N was first measured.

Answers

Answer:

a=55

b=5

T=17

Step-by-step explanation:

The general form of the equation is:

N(t)=ab^{(t)/(T)}

For t = 0:

N(0)=ab^{(0)/(T)}\nN(0) = a = 55\na=55

Since there has been a fivefold increase after 17 years, at t = 17, N(17) = 55*5

N(17)=55b^{(17)/(T)}\n55*5 = 55b^{(17)/(T)}\nb^{(17)/(T)} = 5

If at every 17*n years there in an increase of 5^n, one can deduct that the values for T and b are respectively 17 and 5:

b^{(t)/(T)}= 5^{(17n)/(17)}

Therefore, the function that represents N(t) is:

N(t)=55*5^{(t)/(17)}

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Answers

Answer:

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What is the answer to the problem?

Answers

Answer:

a

Step-by-step explanation:

good luck :)

A regression analysis between sales (in $1000) and advertising (in $) resulted in the following least squares line: Y= 32 + 8X. This implies that an increase of $1 in advertising is expected to result in an increase of $40 in sales.( why? could you help explain to me thank you so much)

Answers

Answer:

Step-by-step explanation: This is a question under linear regression analysis.

The question is trying to relate sales (in $1000) and and advertising.

Both sales and advertising are variables and are connected by the equation

Y = 32x + 8

Which is a linear regression equation of 2 variables.

Where x is the independent variable which represents advertising in this case and Y is the dependent variable which represents sales.

At $1 of adverts, we have $40 of sales.

We just simply put the fact that x = $1 (advertising) into the linear regression equation, we have the value of Y ( sales)

Y = 32(1) + 8

Y = 32 + 8

Y = $40.

Answer below
5*____= 1

Answers

Answer:

1

Step-by-step explanation:

just keep the first number and flip the sign and it would be 1 i think idrk

Driscoll Middle School held basketball tryouts after school. Out of the 80 students, only 25% made the team. How many students made it on the team?

Answers

20 students made the basketball team
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