2 years ago

Simplify -2a(7a^5-5a+5)

Mathematics

1 answer:

olga_2 [115]2 years ago

3 0

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Screenshot with answers included A circle has a radius of 1 cm.

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Area = $\pi r^{2}$
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Circumference = $2\pi r$
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Find the size of the angle <br> 3<br> x<br> .

AlexFokin [52]

Answer:

Given - Two angles measures 2x and 3x

To find - size of 3x

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2 years ago

Seventy-three percent means the same as

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Seventy-three percent is the same as 73% , .73 , and $\frac{73}{100}$ .

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3 years ago

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In a recent test, you scored 1.0 standard deviations above the average score attained, and the scores are normally distributed.

sesenic [268]

Answer:

97.75 %

Step-by-step explanation:

You score 1 standard deviation above the mean

a) we have from left tail up to the mean 50 % of all values

b) We have in the interval [ μ - σ ; μ + σ ] 95.5 % of all possible values, if we divide that 95.5 by 2 we get 47.75 %, the part of the values that correspond to the right, then in order to get the % of students scored lower we add

50 + 47.75 = 97.75 %

So you can say that the porcentage of students that scored lower than you is 97.75 %

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2 years ago