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memos5502
09.01.2021 •
Mathematics
Point A has coordinates (−4, 8)and point B has coordinates (−13, 8) .
Which expression models the distance between points A and B?
A. |−13|−|8|
B. |−13|+|−4|
C. |8|−|−4|
D. |−13|−|−4|
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Ответ:
D
Step-by-step explanation:
AB=|-13|-|-4|
Ответ:
d = -16t^2 + 55
0 = -16t^2 + 55
-55 = -16t^2
t^2 = -55/(-16)
t^2 = 55/16
t = sqrt(55/16)
t = 1.854
It takes approximately 1.854 seconds for the object to hit the ground