2 years ago

Giving f(x)=4x+1 and g(x)=×4^ choose a expression for f(g)(x)

Mathematics

1 answer:

Tcecarenko [31]2 years ago

7 0

Let's say g(x) = x^4 => f(g)(x) = 4*( x^4) +1.

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Martin throws a ball straight up in the air. the equation h(t) = -16t^2 + 40t + 5 gives the height of the ball, in feet, t secon

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Answer:

2.62 seconds

Step-by-step explanation:

Let

t ----> the time in seconds

h(t) ----> he height of the ball, in feet

we have

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we know that

When the ball hits the ground, the height is equal to zero

$-16t^2+40t+5=0$

The formula to solve a quadratic equation of the form

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in this problem we have

$-16t^2+40t+5=0$

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substitute in the formula

$t=\frac{-40\pm\sqrt{40^{2}-4(-16)(5)}} {2(-16)}$

$t=\frac{-40\pm\sqrt{1,920}} {-32}$

$t=\frac{-40+\sqrt{1,920}} {-32}=-0.12\ sec$

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therefore

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