What is the product?n-1
n+1
4n
4n-4
O
4n
n+1
n
17+1
7+1
4
n+1

Answers

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Which function below is the inverse of f(x) = x2 − 9?

Answers

Let f(x)=y
y= $x^(2) -9$
Make x the subject of the formula;
y+9= $x^(2)$
x= $√(y+9)$
So, the inverse of the function is thus;
$f^(') = √(x+9)$

f (x)=y
y=2x-9

X Y
-2 -15 y=2 (-2)-9
y=-4+-9
y=-15

-1 -11 y=2 (-1)-9
y=-2+-9
y=-11

0 -9 y=2 (0)-9
y=0+-9
y=-9

1 -7 y=2 (1)-9
y=2+-9
y=-1

2 -5 y=2 (2)-9
y=4+-9
y=-5

Here is all the work

What is the area of rectangle PQRS?

Answers

The length of PQ = 3 + 4.5 + 2 = 9.5 inches.

The area is Length times width:

4.5 x 9.5 = 42.75 square inches.

The answer is D.

Add 2+4.5+2 and that is 9.5 PQ=9.5

multiply 4.5*9.5

that is 42.75 so the answer is D

Im so confused, how do i get the variance with just the standard deviation

Answers

Answer:

To figure out the variance, divide the sum, 82.5, by N-1, which is the sample size (in this case 10) minus 1. The result is a variance of 82.5/9 = 9.17. Standard deviation is the square root of the variance so that the standard deviation would be about 3.03.

hope this helps!

Simplify the expression, Please help!!1. -x(7x - 8)

A: 6x^2 - 9x
B: -7x - 8x
C: -7x^2 + 8x
D: 7x + 8x

2. 3k^3(-2k^2 - 4k + 7)

A: -6k^3 - k + 10k
B: -6k^4 - 12k^3 + 21k^2
C: k^4 - k^3 + 10k2
D: 6k^4 - 12k^3 + 10k^2

3. (2k + 1) (k - 4)

A: 2k^2 - 7k + 4
B: 2k^2 - 3k + 4
C: 2k^2 + 9k + 4
D: 2k^2 - 7k - 4

4. (-2y + 5) (y + 3)

A: -2y^2 + 8y + 15
B: -2y^2 - y + 15
C: 2y^2 + 8y + 8
D: 2y^2 - y + 8

Answers

For the first one it would be C.

Can someone help me?

Answers

Answer:

i dont know this but use the app Socratic. You can download it on your phone. Take a picture of the problem, crop it then press enter. It will pull up a bunch of websites with the answer and teach you how to do the problem. HOPE THIS HELPS!!!! mark brainliest plz

Step-by-step explanation:

List the next four multiples of the fraction 2/5