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muminat
3 years ago
14

Write each ratio in the simplest form. (Note: remember the units of measurement, they must be the same!)

Mathematics
1 answer:
iVinArrow [24]3 years ago
5 0
Wait I know u still need the answer or not anymore
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Find the inverse of the equation
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The inverse of f(x)=  \frac{6x+5}{3x-1} is f(-1)= \frac{-x-5}{3(2-x)} I hope I helped
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3+×/2=10 <br> Is ×/2=7<br> And does ×=14
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3+\dfrac{x}{2}=10\qquad|\text{subtract 3 from both sides}\\\\\dfrac{x}{2}=7\qquad|\text{multiply both sides by 2}\\\\\boxed{x=14}

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Write these numbers in order starting with the smallest 2.303,2.3,2.33,2.03
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2.03, 2.3, 2.303, 2.33

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The cold water faucet of a bathtub can fill the tub in 15 minutes. The drain, when opened, can empty the full tub in 20 minutes.
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10 minutes

Step-by-step explanation:

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3 years ago
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A company developing a new cellular phone plan intends to market their new phone to customers who use text and social media ofte
Ber [7]

Answer:

A customer who sends 78 messages per day would be at 99.38th percentile.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Average of 48 texts per day with a standard deviation of 12.

This means that \mu = 48, \sigma = 12

a. A customer who sends 78 messages per day would correspond to what percentile?

The percentile is the p-value of Z when X = 78. So

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

Z = \frac{78 - 48}{12}

Z = 2.5

Z = 2.5 has a p-value of 0.9938.

0.9938*100% = 99.38%.

A customer who sends 78 messages per day would be at 99.38th percentile.

8 0
2 years ago
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