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8090 [49]
3 years ago
14

If f(x)=4(3x-5), find f^-1(x)

Mathematics
1 answer:
Margaret [11]3 years ago
3 0

Answer:

f^-1(x) = (x+20) / 12

Step-by-step explanation:

f(x) = 4(3x-5)

Let y be the image of f.

y = 4(3x-5)

y = 12x-20

y+20 = 12x

x = (y+20) / 12

f^-1(y) = (y+20) / 12, so

f^-1(x) = (x+20) / 12

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Use the function below to find F(3).<br> )(<br> F(x)=(1/4)^x
natali 33 [55]

Answer:

1/64

Step-by-step explanation:

F(3) means to use 3 in place of x in the given equation.

f(x) = (1/4)^x

f(3) = (1/4)^3

Either use exponents rules:

= 1^3 / 4^3

= 1 / 64

or just use the meaning of exponents

= 1/4 × 1/4 × 1/4

= 1/64

3 0
2 years ago
Help me solve this please .
lord [1]

x = 59

3x - 33 = 2x + 26

-2x -2x

1x - 33 = 26

+33 +33

1x = 59

----- -----

1 1

x = 59

4 0
3 years ago
Help&amp;EXPLAIN <br> ==============
larisa86 [58]

Answer:

A = 108 in.²

Step-by-step explanation:

The figure can be decomposed into 3 rectangles.

✔️Area of rectangle 1 = L*W

L = 8 in.

W = 6 in.

Area = 8*6 = 48 in.²

✔️Area of rectangle 2 = L*W

L = 10 in.

W = 4 in.

Area = 10*4 = 40 in.²

✔️Area of rectangle 3 = L*W

L = 5 in.

W = 4 in.

Area = 5*4 = 20 in.

✔️Area of the irregular figure = 48 + 40 + 20 = 108 in.²

8 0
3 years ago
What the answer 12x+90-2x=180
morpeh [17]

Answer:

x=9

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
3√16-5=<br><br><br> please help asap
IRISSAK [1]

Answer:

\large\boxed{3\sqrt{16}-5=7}

Step-by-step explanation:

3\sqrt{16}-5=3(4)-5=12-5=7\\\\\sqrt{16}=4\ \text{because}\ 4^2=16

3 0
3 years ago
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