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3 years ago

Please can someone help me with this

Mathematics

1 answer:

VashaNatasha [74]3 years ago

4 0

Answer:

brainllest if right

Step-by-step explanation:

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After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by th

lubasha [3.4K]

Answer:

The ball will take 4.05 seconds to hit the ground.

Step-by-step explanation:

we have

$h=-16t^{2}+64t+3$

This is a quadratic equation (vertical parabola) open down

The vertex is a maximum

we know that

The ball hit the ground when h=0

Solve the quadratic equation

For h=0

$-16t^{2}+64t+3=0$

The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$ is equal to

$t=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^{2}+64t+3=0$

$a=-16\\b=64\\c=3$

substitute in the formula

$t=\frac{-64(+/-)\sqrt{64^{2}-4(-16)(3)}} {2(-16)}$

$t=\frac{-64(+/-)\sqrt{4,288}} {-32}$

$t=\frac{64(-)\sqrt{4,288}} {32}=-0.05\ sec$ ---> the time cannot be a negative number

$t=\frac{64(+)\sqrt{4,288}} {32}=4.05\ sec$

therefore

The ball will take 4.05 seconds to hit the ground.

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3 years ago

How to put 1/2 and 3/4 as a pair of fractions with a common denominator

dolphi86 [110]

Answer:

2/4 and 3/4

Step-by-step explanation:

To make both fractions have the same denominator, multiply 1/2 by 2. 1/2 times 2 equals 2/4

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3 years ago

The vertices of a triangle are A(4,5), B(7,1), and (9,6). After reflecting over the line x = 5, what are the new coordinates?

Alex

the answers are A' (6,5) B' (3,1) and C' (1,6)

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olga nikolaevna [1]

Answer:

3/3, 9/9, 12/12

Step-by-step explanation:

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Answer:

<h2 />

Step-by-step explanation:

ghh $bb\sqrt{x}$ btw go check out fidgetshopbutterflys on and follow on tiktok

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