What is the inverse of the function f(x)=-x?

Answers

Answer 1

Answer: To find the inverse we have to first change the function notation to 'y'

So

f(x) = -x becomes y = -x

Next, we have to switch the x and y values

So, y = -x becomes x = -y

Now, we have to solve for y.

y = -x

So the inverse of f(x) = -x is:

$f^(-1)(x) = -x$

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If P = a^2 + a - 1 and R = –a - 1, which expression represents P + R a) a^2 + 2
b) a^2 - 2
c) a^2 + 2a
d) a^2 + 2a - 2

Answers

$P=a^2+a-1;\ R=-a-1\n\nP+R=(a^2+a-1)+(-a-1)=a^2+a-1-a-1=a^2-2\n\nAnswer:b)$

Danielle bought a new diary for $12.80. She paid with a $20 bill. How much change did she get back? A. $32.80 B. $8.20 C. $7.20 D. $7.10

Answers

Answer:

Step-by-step explanation:

C

Steps:

$20 convert to decimal which is 20.00

20.00 - 12.80 = 7.20

A rectangle consists of two squares. Each square has a perimeter of 16 cm.

Answers

The rectangle would have a width of 32 cm and height of 16

Simplify the expression. (–5a^5b^5)^2(a^3b^3)^5

Answers

Answer:

Step-by-step explanation:

need help

Kristen is making lanyards for a convention. She needs to make 1,000 lanyards and knows that 1 lanyard uses 1.75 feet of cord. How much cord will Kirsten need? Describe how Kirsten could have solved the problem without writing out the pattern needed.

Answers

1,750 feet of cord
She needs 1000 lanyards and therefore 1000 times the amount of cord for 1 lanyard, so if 1 lanyard uses 1.75 feet of cord, 1000 lanyards needs 1000 times 1.75 feet of cord.
1000*1.75ft=1,750ft
She needs 1,750 feet of cord.

1 lanyards = 1.75 ft of cord
1000 lanyards = 1.75 x 1000
1.75 x 1000 = 1750 hope i helped
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If point B is halfway between 0 and 1 on a number line and point A is halfway between 0 and point B, what fraction of 1 does point A represent?