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Vinvika [58]
2 years ago
14

suppose the expression was (12-3) to the second power would you have to still simplify 3 to the second power first explain

Mathematics
1 answer:
crimeas [40]2 years ago
4 0

You would take which ever number is taken to the power sat it was 12 to the power of 2+4, you would take the 12 not the 4, Hope this helps!

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Answer:

P = 0.006

Step-by-step explanation:

Given

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As we are not given that exact lamp, it means we have to find the probability where any of the lamp burning at the end of 1300 hours, So we have

Suppose i represents lamps

P (∑i from 1 to 25 (X_i > 1300)) = 1300

= P(X^{'}> \frac{1300}{25})                  where X^{'} represents mean time of a single lamp

= P (Z> \frac{52-50}{\frac{1}{\sqrt{25}}})                Z is the standard normal distribution which can be found by using the formula

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Now, P(Z>2.5) = 0.006 using the standard normal distribution table

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32.

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