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anonymous
 one year ago
Stephanie is a very good soccer player. She can kick a soccer ball with an initial velocity of
21.3 m/sec. The function that represents the height of the ball with respect to time is ℎ 𝑥 =
−4.9𝑥2 + 21.3𝑥. About how many seconds will it take for the ball to hit the ground?
anonymous
 one year ago
Stephanie is a very good soccer player. She can kick a soccer ball with an initial velocity of 21.3 m/sec. The function that represents the height of the ball with respect to time is ℎ 𝑥 = −4.9𝑥2 + 21.3𝑥. About how many seconds will it take for the ball to hit the ground?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Hero @dan815 @Michele_Laino @Teddyiswatshecallsme

freckles
 one year ago
Best ResponseYou've already chosen the best response.0\[h(x)=4.9x^2+21.3x ?\] we want to know what x is when the ball hits the ground well when the ball hits the ground the height between the ball and the ground is 0 so you want to solve for x when h(x)=0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you set the equation up and ill solve it pls @freckles

freckles
 one year ago
Best ResponseYou've already chosen the best response.0so you are having trouble replacing h(x) with 0?

freckles
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435093451580:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0am I solving for x? @freckles

freckles
 one year ago
Best ResponseYou've already chosen the best response.0yes I think I said solve for x

freckles
 one year ago
Best ResponseYou've already chosen the best response.0let me scroll up I did :p

freckles
 one year ago
Best ResponseYou've already chosen the best response.0x is what you are solving for it is the time variable

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok I got x=0,4.34693878 @freckles

freckles
 one year ago
Best ResponseYou've already chosen the best response.0ok so at 0 sec the ball is on the ground and the ball is on the ground again after 4.347 secs
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