3 years ago

5. If g(x) = 3x + 4, what is the value of g-1(g(-2))?

Mathematics

1 answer:

stepan [7]3 years ago

4 0

Answer:

- 2

Step-by-step explanation:

The composition of inverse functions gives x

g(x) and $g^{-1}$ (x) are inverse functions, then

$g^{-1}$ (g(x)) = x , thus

$g^{-1}$ (g(- 2)) = - 2

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Option 3. 71 ft. is the distance between B and top of the hill.

Step-by-step explanation:

Let the height of the hill is h ft and the distance of A from the hill be x ft and distance from B to hill is y.

It is given distance between A and B is 45 ft. ∠BAO = 65° and ∠ABO = 80°.

We have to find the distance of B from the top of the hill.

Now from ΔACO $tan 65 = \frac{h}{45-x} = 2.14$

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From ΔBCO $tan80 = \frac{h}{x} = 5.67$

h = 5.67x

Now h = 5.67x = 2.14(45-x)

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