savannah19dw
20.09.2019 •
Mathematics
Suppose you drop a ball from a window 15 meters above the ground. the ball bounces to 70% of its previous height with each bounce. what is the total number of meters (rounded to the nearest tenth) the ball travels between the time it is dropped and the eighth bounce?
a. 76.4
b. 79.2
c. 32.1
d. 64.2
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Ответ:
32.1
Step-by-step explanation:
formula: a1 * ( 1 - r^n) / 1 - r
a1 = 15*70%=10.5
r=70%
n=8
plug all in and then u find the answer
Ответ:
complimentary angles, when added, = 90 degrees
1/6(90) = 90/6 = 15
5/6(90) = 450/6 = 75
so ur 2 angles are : 15 and 75