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3 years ago

Sam can do 120 jumping jacks in two minutes, how many jumping jacks can he complete in 5 mins.? (plz answer quick)

Mathematics

2 answers:

Alexxx [7]3 years ago

8 0

Answer:

300 jumping jacks

Step-by-step explanation:

120 ÷ 2 = 60 jumping jacks per minute

60 × 5 = 300 jumping jacks

Sam can do 300 jumping jacks in 5 minutes.

Hope that helps.

maria [59]3 years ago

3 0

Answer:

Step-by-step explanation:

120 / 2 = 60 (jumping jacks per minute)

60 * 5 = 300

Best of Luck!

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15.24% probability that at least 2 will still stand after 35 years

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To solve this question, we need to understand the binomial distribution and the exponential distribution.

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$P(X > 35) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-0.04*35} = 0.2466$

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Each tower has a 0.2466 probability of being standing after 35 years, so $p = 0.2466$

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We have to find:

$P(X \geq 2) = P(X = 2) + P(X = 3)$

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$P(X = 3) = C_{3,3}.(0.2466)^{3}.(0.7534)^{0} = 0.0150$

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