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Irina18 [472]
4 years ago
8

John has 14 boxes of apples. Each box holds 12 apples. If 7 of the boxes are full, and 7 of the boxes are half full, how many ap

ples does John have?
Mathematics
1 answer:
kondor19780726 [428]4 years ago
3 0

Answer:

John has 126 apples.

Step-by-step explanation:

If John has 7 full boxes and 7 half boxes and each box has 12 then you have too

12 times 7 = 84 (this id how many apples are in the full boxes)

Then 12 ÷ 2 × 7 = 42 ( the number of half boxes)

Then you add them together:

84 + 42 = 126

So you get 126

Hope this helped!

Please mark me brainliest

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Answer:

(-7.5, 0) x intercept

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Step-by-step explanation:

The x intercept is where it crosses the x axis

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To estimate the mean height μ of male students on your campus,you will measure an SRS of students. You know from government data
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Answer:

a) \sigma = 0.167

b) We need a sample of at least 282 young men.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by

Z = \frac{X - \mu}{\sigma}

This Zscore is how many standard deviations the value of the measure X is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

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To solve this problem, we use the 68-95-99.7 rule. This rule states that:

68% of the measures are within 1 standard deviation of the mean.

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In this problem, we want 99.7% of all samples give X within one-half inch of \mu. So X - \mu = 0.5 must have Z = 3 and X - \mu = -0.5 must have Z = -3.

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(b) How large an SRS do you need to reduce the standard deviationof x to the value you found in part (a)?

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s = \frac{\sigma}{\sqrt{n}}

We want to have s = 0.167

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