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levacccp [35]
3 years ago
9

The height of a ball in meters is modeled by f(x) equals negative 5X squared +50 X where X is the time in seconds after it is hi

t how long is the ball in the air
Mathematics
1 answer:
luda_lava [24]3 years ago
3 0

Answer:

10 seconds

Step-by-step explanation:

Find the zeros by equating f(x) to zero, that is

- 5x² + 50x = 0 ← factor out - 5x from each term

- 5x(x - 10) = 0

Equate each factor to zero and solve for x

- 5x = 0 ⇒ x = 0

x - 10 = 0 ⇒ x = 10

x = 0 denotes the time when the ball is struck and x = 10 when the ball returns to the ground.

Time in air = 10 - 0 = 10 seconds

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I’m trying to correct this problem but I don’t know how can someone help me
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Remark

It is not a straight line distance from the park to the mall. None of the answers give you that result. And if you know what displacement is, none of the answers are really displacement either. The distance is sort of a "as the crow flies." distance. There's a stop off in the middle of town.

Method

You need to use the Pythagorean Formula twice -- once from the park to the city Center and once from the city center to the mall.

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a = 3   [distance east]

b = 4  [distance south]

c = ??

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So the distance from the park to the city center is 5 miles

Distance from City center to the mall

a = 2 miles [distance east]

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Answer

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HOPE THIS HELPED

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