<span>When it hit the ground
y = 0
y = –0.04x^2 + 8.3x + 4.3
0.04x^2 - 8.3x - 4.3 = 0
x = [-(-8.3) +/- √{(-8.3)^2 - 4 x 0.04 x (-4.3)}]/[2 x 0.04]
x = [8.3 +/- 8.34]/[0.08]
x = 208.02 m
A is right option
hope this helps</span>
Answer:
6
Step-by-step explanation:
Big brain
In triangle ABC,
AB^2 = CA^2+CB^2 (pyth. theorem)
AB^2 = 9^2 + 12^2
AB = √ 9^2+12^2
AB = √ 225
AB = 15
The answer is b. 9 billion
