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Andrej [43]
2 years ago
6

-4y^5 + 6y^3 + 8y^2 - 2y

Mathematics
1 answer:
vitfil [10]2 years ago
8 0
The answer is -2y•(2y^4 - 3y^2 - 4y + 1)
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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
Stacy earns $15 each week plus $.50 for each customer on her paper route. She wants to earn at least $25 each week. What equatio
Airida [17]

Answer:  .50x+15=25  

I hope this helps.

6 0
3 years ago
It a math question so please help me out.
il63 [147K]

Answer: I say B

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Stanley ordered 2 pizzas cut into eighths. if he ate 5/8 of a pizza, how much was left?
Nookie1986 [14]
There was 11/8 of pizza left after Stanley ate.

2 x 8/8 = 16/8
16/8 - 5/8 = 11/8

7 0
3 years ago
Read 2 more answers
what is the slope of the line that passes through the points (-2,7) and (2,-5)? Write your answer in simplest form.
MatroZZZ [7]

Answer: -3

Step-by-step explanation: m= -5-7/2+2=-12/4=-3

M=-3

5 0
2 years ago
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