Solve for n 6/n-5=2/7.

Mathematics

1 answer:

ra1l [238]4 years ago

5 0

Answer:

42/37

Step-by-step explanation:

42/n - 35 = 2 Multiply everything by 7 to get rid of the fraction

42 - 35n = 2n Multiply everything by n

42 = 37n Move 35n to the right side

42/37 = n Divide by 37

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Step-by-step explanation:

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If a rectangular piece of metal has 27.75 square inches what is the length and width?

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To learn more on rectangles: brainly.com/question/15019502

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2 years ago

A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam

Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

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

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

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 pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

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