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coldgirl [10]
3 years ago
14

Ms. Carter has 30 boxes of books. Half of the boxes have 25 books and the other half have 50 books. How many books does she have

in all?
Mathematics
2 answers:
Nikitich [7]3 years ago
5 0
15 x 25 = 375
15 x 50 = 750

375 + 750 = 1,125

She has 1,125 books. 
yarga [219]3 years ago
4 0
25*15 = 375
50*15 = 750
375 + 750 = 1125

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Random sample size of 81 are taken from an infinite population whose mean and standard deviation are 200 and 18, respectively. T
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Answer:

the  mean and standard error of the mean are 200 and 2 respectively.

Step-by-step explanation:

Given that ;

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The value of population characteristics such as the  Population mean (μ), standard deviation (σ) are said to be known as the population distribution.

From the given information above;

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\mathbf{standard \ error \ of \ mean = \dfrac{\sigma}{\sqrt {n}}}

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\mathbf{standard \ error \ of \ mean =2}

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6 0
2 years ago
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olga2289 [7]
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x + 221° - 221° = 360° - 221°

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3 years ago
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Square root of 43 on a number line?
djverab [1.8K]

Answer:

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Step-by-step explanation:

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