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zhannawk [14.2K]
3 years ago
5

Fred got a score of 80 on the test. Enter a division sentence using negative numbers where the quotient represents the number of

questions Fred answered incorrectly on the test.
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0

Answer:

.

Step-by-step explanation:

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Which Of the following pairs of functions are inverse of each other?
damaskus [11]

One way is to solve for the inverse of the first function

remember, to solve, replace f(x) or g(x) with y, switch x and y, solve for y and replace it with f^{-1} (x)

A.

f(x)=x/2+8\\y=x/2+8\\x=y/2+8\\x-8=y/2

2x-16=y

f^{-1}=2x-16

nope, not A

<h3>What is the inverse function?</h3>

The inverse function of a function f is a function that undoes the operation of f. The inverse of f exists if and only if f is bijective, and if it exists, is denoted by {\displaystyle f^{-1}.}

B.

f(x)=3x^3+16\\y=3x^3+16x=3y^3+16\\x-16=3y^3\\(x-16)/3=y^3

f^{-1}(x)=\sqrt[3]{((x-16)/3)}

nope, not the same

not B

C.

f(x)=18/x-9\\y=18/x-9\\x=18/y-9\\x+9=18/y\\y(x+9)=18\\y=18/(x+9)\\f^{-1}(x)=18/(x+9)

The correct, answer is C.

To learn more about the inverse function visit:

brainly.com/question/2972832

#SPJ1

5 0
1 year ago
Isaac shoveled 9 of his neighbors' driveways after a snow storm. He charged $25 for a short driveway and $45 for a long driveway
e-lub [12.9K]

Answer:

y($) =  405- 20x

Step-by-step explanation:

Number of short driveways = x

Number of long driveways = 9-x

Fee per long driveway = $45

Fee per short driveway= $25

Total amount = y

y ($) =  25x + 45 (9-x)

      =  25x  + 405 -45x

      = 405- 20x

5 0
3 years ago
A number that multiplies a variable in a term is a _-
Leto [7]
It is called a variable
8 0
3 years ago
Read 2 more answers
Simplify 9 x 5/9<br> in 4 mins
Triss [41]

Answer:

5

Step-by-step explanation:

9 x 5/9

9/1 * 5/9

Rewriting

9/9 * 5/1

1 * 5/1

5

6 0
2 years ago
Read 2 more answers
F is the midpoint of EG If EF = x + 2 and FG = 2x - 6, find<br> FG
mezya [45]

Answer:

FG = 10

Step-by-step explanation:

EF = x + 2 ; FG = 2x - 6

F is the mid-point of EG. So, EF = FG

=  > x + 2 = 2x - 6

=  > 2x - x = 6 + 2

=  > x = 8

FG = 2×8 - 6 = 10

8 0
3 years ago
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