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Sphinxa [80]
2 years ago
12

Translate the equation into written algebraic sentence 8x=4x-7

Mathematics
1 answer:
Rzqust [24]2 years ago
7 0

Answer:

x = -7/4

Step-by-step explanation:

"Eight times a number equals 4 times that number less 7."

Subtracting 4x from both sides of this equation, we get:

4x = -7

Dividing both sides of this result by 4 yields

x = -7/4

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The head of the Westlane Cultural Center wants to get a sense of how quickly pledges from donors arrive at the center. It takes
Rzqust [24]

Answer:

95.64% probability that pledges are received within 40 days

Step-by-step explanation:

Problems of normally distributed samples are 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}

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 problem, we have that:

\mu = 28, \sigma = 7

What is the probability that pledges are received within 40 days

This is the pvalue of Z when X = 40. So

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

Z = \frac{40 - 28}{7}

Z = 1.71

Z = 1.71 has a pvalue of 0.9564

95.64% probability that pledges are received within 40 days

7 0
3 years ago
Please help with algebra
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Answer:

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Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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If $4200 is invested into a savings account for which interest is compounded semiannually, and if the $4200 turns into $4900 in
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6 0
3 years ago
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