When a ball is tossed to a height of 4 meters above the ground i t always rebound to 40% of its previous height until it stop .Ring the total distance that the ball has covered when it strikes the ground for the fifth time

3 answers

for the nth bounce, it travels
4 * 2 * 0.40^n
So this is just a GP with
a = 8
r = 0.40
So, after 4 round trips, it has gone
S4 = 8(1 - 0.4^4)/(1-0.4) meters
Add to that the initial 4m drop.
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HALLO PEOPLE-can someone pls answer me question?

Brianna solved a two-step equation, but she made a mistake along the way.

0.1x + 3 = 1.7
(-3) + 0.1x + 3 = 1.7 + (-3) Line 1
0.1x = -1.3 Line 2
(-0.1) + 0.1x = -1.3 + (-0.1) Line 3
x = -1.4 Line 4
What mistake did Brianna make?
On Line 1, Brianna should have subtracted 3 instead of adding -3.
On Line 1, Brianna violated the addition property of equality.
On Line 3, Brianna should have divided by 0.1 instead of subtracting 0.1.
On Line 3, Brianna violated the addition property of equality.