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Andrej [43]
3 years ago
6

Can someone help me find the scale factor

Mathematics
1 answer:
NARA [144]3 years ago
4 0
Yes! The smaller trapezoid is being turned into the bigger one. Take 10.5 and divide that by 7. This would be 1.5. You can double check your work with 15 divided by 10.

Answer = 1.5
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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
3 years ago
Solve, graph, and express x + 5x – 6 < 12 in interval notation.
Nikolay [14]

Answer:

Solve: x < 3 Graph: *attached* Interval Notation: (-∞,3)

Step-by-step explanation:

Solve:

combine like terms

x + 5x -6 < 12

6x -6 < 12

Add 6 on either side of the inequality

6x < 18

Divide by 6 on either side of the inequality

x < 3

Graph:

*see attachment*

Interval notation:

(-∞ , 3)

3 0
3 years ago
The functions q and r are defined as follows.
UkoKoshka [18]
Q(3) = -2(3)+2 = -4
r(q(3)) = (-4)^2-1 = 15
3 0
4 years ago
If you add 2 cubes of sugar to a 6 ounce cup of tea and 3 cubes of sugar to a 9 ounce cup of tea, which one is sweeter?
Hoochie [10]

Answer:

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
What is plane z in this image
denpristay [2]

Answer:

the left side of the line

Step-by-step explanation:

6 0
4 years ago
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