The sum of a number is 25 and 5 is 7

Mathematics

1 answer:

77julia77 [94]4 years ago

5 0

They are that because they are all equal

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M AEB = 37°, what is m CED?

Oksana_A [137]

Answer: 53 degree

Explanation:

AEB + BEC + CED = 180 degree
37 + 90 + CED = 180
CED = 180 - 127
CED = 53 degree

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You buy the same number of brushes, rollers, and paint cans. Write an expression in simplest form that represents the total amou

Soloha48 [4]

If you buy ' N ' of each item, then you'll pay 3.99N for brushes,
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The question assures us that you bought the same number of
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3.99N + 21.79N + 6.89N

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3 years ago

NEED HELP! Thanks!

sladkih [1.3K]

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there are 8 rows of chairs in the auditorium.three of the rows are empty. what fraction of the rows are empty?

Phantasy [73]

3/8 of the rows are empty. The three rows that are empty (3) would be in the numerator while the total amount of rows (8) would be in the denominator.

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Your boss tells you that she knows the length of the widgets your company makes is normally distributed with a mean of 25 inches

sp2606 [1]

Answer:

Mean of sampling distribution = 25 inches

Standard deviation of sampling distribution = 4 inches

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 25 inches

Standard Deviation, σ = 12 inches

Sample size, n = 9

We are given that the distribution of length of the widgets is a bell shaped distribution that is a normal distribution.

a) Mean of the sampling distribution

The best approximator for the mean of the sampling distribution is the population mean itself.

Thus, we can write:

$\bar{x} = \mu = 25\text{ inches}$

b) Standard deviation of the sampling distribution

$s = \dfrac{\sigma}{\sqrt{n}} = \dfrac{12}{\sqrt{9}} = 4\text{ inches}$

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3 years ago