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Agata [3.3K]
3 years ago
6

3. A soccer player heads a ball from a height of 6 feet with an initial vertical velocity of

Mathematics
1 answer:
CaHeK987 [17]3 years ago
3 0

Answer:

1.5secs

Step-by-step explanation:

Given the expression that models  the height as;

h(t) = -16t²+20t +6

The ball will touch the ground at when h(t) = 0

0 =  -16t²+20t +6

Swap

-16t²+20t +6 = 0

Divide through by -2

8t²-10t-3 = 0

Expand using the general formula

t = -(-10)±√(-10)²-4(8)(-3)/2(8)

t = 10±√100+96/16

t = 10±√196/16

t = 10±14/16

t = 10+14/16

t = 24/16

t = 1.5

Hence it will take the ball 1.5secs to hit the ground

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3 years ago
A line passes through the point (-4,9) and has a slope of
Brilliant_brown [7]

Answer:

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Step-by-step explanation:

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No! Nadia is not correct, the maximum is actually 4 hours. I know this because

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h=4.15



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