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34 votes
34 votes
I need help with this question please

I need help with this question please-example-1
User Evanbikes
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1 Answer

18 votes
18 votes

Answer:

Explanation:

30t - 5t² = 10

5t² - 30t + 10 = 0

t = [30 ± √(30² - 4 ⋅ 5 ⋅ 10)] / [2 ⋅ 5]

= [30 ± √700] / 10

= [30 ± 10√7] / 10

= 3 ± √7

≈ 0.35 seconds and 5.65 seconds

User Jeremy McGibbon
by
2.5k points