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vodomira [7]
4 years ago
12

PLEASE HELP ME ASAP - WILL GIVE BRAINLIEST - 20 POINTS! THANKS!

Mathematics
2 answers:
vlada-n [284]4 years ago
8 0

Answer:

A: f^-1(x) = (x - 5) / 2

Step-by-step explanation:

To find the inverse of a function, exchange x and y then solve for x

y = 2x +5

Exchange x and y

x = 2y +5

Solve for y

Subtract 5

x-5 = 2y +5-5

x-5 = 2y

Divide by 2

(x-5)/2 = y

The inverse is (x-5)/2

ArbitrLikvidat [17]4 years ago
7 0

Answer:

A

Step-by-step explanation:

You switch the y and x and solve for y.

y = 2x + 5

becomes

x = 2y + 5

Subtract 5 on both sides.

x - 5 = 2y

Divide 2 on both sides.

(x - 5) / 2 = y

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Brainliest for best answer thank for helping
zaharov [31]

Answer:

A

Step-by-step explanation:

Find the slope using rise/run

This gets you -5/4

Find the y intercept, which is at (0, 3)

This means the equation will be:

y = -5/4x + 3

8 0
3 years ago
Given the functions, f(x) = x2 + 2 and g(x) = 4x - 1, perform the indicated operation. When applicable, state the domain restric
Naya [18.7K]

Answer:

3rd option

Step-by-step explanation:

substitute x = f(x) into g(x)

g(f(x))

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5 0
2 years ago
Suppose two $20 bills, three $10 bills, one $5 bill, and seven $1 bills are placed in a bag. If you were to pull a bill at rando
Korolek [52]

Answer:

Assuming that the $1 bill was pulled at random, then the expected value of the amount chosen is \frac{7}{13}.

Step-by-step explanation:

From the given question, the bag contains;

$1 bill = 7

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$10 bill = 3

$20 bill = 2

Total number of bills in the bag = 13

Pulling a bill at random, the bills would have an expected value as follows:

For $1 bill, the expected value = \frac{7}{13}

For $5 bill, expected value = \frac{1}{13}

For $10 bill, expected value = \frac{3}{13}

For $20 bill, the expected value = \frac{2}{13}

Assuming that the $1 bill was pulled at random, then the expected value of the amount chosen is \frac{7}{13}.

6 0
3 years ago
This mapping shows a functional relationship.<br><br> When f(x)=4, what is the value of x?
marishachu [46]

Answer:

x=2

Step-by-step explanation:

This is a one-to-one relationship, so when the output (range) is 4, the input (domain) is 2

3 0
3 years ago
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kodGreya [7K]

Answer:

B.nonlinear

Step-by-step explanation:

4 0
3 years ago
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