If f(x)=2x^2-1 and g(x)= -5x , write a function rule representing the result of each function operation.

1 answer:

7 0

A.) (fg)(x) = (2x^2 - 1)(-5x) = -10x^3 + 5x

b.) (g of f)(x) = g(f(x)) = -5(2x^2 - 1) = -10x^2 + 5

You might be interested in

The store is selling lemons at $0.39 each. Each lemon yields about 2 tablespoons of juice. How much will it cost to buy enough l

I am Lyosha [343]

Answer: 6.24 tablespoons

Explanation: okay so if $.39 is 2 tablespoons, then you can multiply that by 8 because there are 8 tablespoons in half a cup. After you multiply that just multiply it by 2 because they are trying to make two pies. And that’s how you your answer.

5 0

3 years ago

I NEED A MATH WIZ!

valentinak56 [21]

So each of these statements are talking about the square footage of land per person. Let's go and find it!

First off, let's find the number in each building of the original complex:
280 people / 4 buildings

Each building has an equal number of residents. So just divide:
280/4 = 70.

So 70 residents per building

Now consider the fact that once a new building is built, another 70 people will move in.
280 + 70= 350

350 people total.

Then lets look at the plot of land
Originally, there are 200,000 square feet of land for the 4 buildings. Then after the expansion, the plot of land will be:
200,000 + 200*200
= 200,400

Go back to the question. What's the effect of the expansion in terms of square feet of land per person?
Divide!
200,400 / 350
Approximately = 572.57 square feet

Then since it's being compared to the amount each resident had before the expansion, do the same thing with the corresponding numbers:
200,000 / 280
Approximately = 714.29

So how much will each person's land decrease?
714.29 - 572.57 approximately = 141.72 square feet.

The answer is the first choice!

Hope this helps

4 0

3 years ago

What does a residual value of 0.8 mean in reference to the line of best fit?

notka56 [123]

Answer:

i think its -The given point is 0.8 units above the line of best fit

Step-by-step explanation:

only because if it were -0.8 it would be below the line

6 0

2 years ago

Read 2 more answers

What is the area of the shaded area?

denis-greek [22]

First you want to find the area of the square, which would be 121. ( 11 x 11 )

Next you want to find the area of the circle, 78.54 ((pi)5^2)

Last, you want to subtract the area of the circle, from the area of the square that is shaded. Youre left with 42.46

Hope this helped

7 0

3 years ago

Read 2 more answers

Simplify each expression by distributing and combined bf like terms (SHOW WORK) please

GarryVolchara [31]

Answer:

c - 39

Step-by-step explanation:

Given,

-4 (8 - c ) - (3c + 7 )

= -4 ( -c + 8 ) - (3c + 7 )

= 4c - 32 - ( 3c + 7 )

= 4c - 32 - 3c - 7

= ( 4 - 3 )c + ( -32 - 7 )

= c + ( -32 - 7)

= C - 39

hope this answer helps you dear! take care!

8 0

2 years ago