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stellarik [79]
3 years ago
14

Algebra what is 7×m = 420 what is the m?

Mathematics
2 answers:
finlep [7]3 years ago
8 0
7*m==420
7m=420 (divide by 7 on both times)
m=60

hope that helps!
miskamm [114]3 years ago
8 0
We need 7, m times to make 420, so
If we divide 420 in equal groups of 7 we will get how many m will have.
m=420/7=60
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<h3><u>Ratios</u></h3>

Given that a preliminary study was carried out to test the hypothesis that the ratio of white to dark herons on the island was 3:1, but A) a small census found 16 white morphs and 4 dark, to determine if the assumption of a 3 :1 ratio could be rejected, and B) to determine the same question if the census were larger with 160 white morphs and 40 dark, the following calculations must be made:

A)

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B)

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Learn more about ratios in brainly.com/question/1504221

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2 years ago
A bike and skate shop rents bike for $21 per day and pairs of skates for $20 per day. To remain viable, the shop needs to make a
Leya [2.2K]
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Answer:

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BARSIC [14]

Answer:

Due to the higher Z-score, Demetria should be offered the job.

Step-by-step explanation:

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

The Z-score measures how many standard deviations the measure 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 p-value, we get the probability that the value of the measure is greater than X.

In this question:

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Due to the higher Z-score, Demetria should be offered the job.

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Answer:

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