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slava [35]
3 years ago
6

In

Mathematics
1 answer:
Ivenika [448]3 years ago
5 0

Answer:

I believe that the first 9 (90) is 100 times greater than the second 9 (9000).

Step-by-step explanation:

If you multiply 90 by 10, it will get 900, which is not enough!

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Rewrite the following without an exponent.<br> (8/5) -1
Mandarinka [93]

Answer:

5/8.

Step-by-step explanation:

a^-1 = 1/a

So here we have:

(8/5)^-1

= 1/ (8/5)= 5/8.

6 0
2 years ago
Which SI unit is appropriate for measuring the height of a person? A. feet B. meters C. grams D. kilometers
Lerok [7]
The appropriate SI unit for measuring the height of a person is meters.
3 0
3 years ago
An English professor assigns letter grades on a test according to the following scheme. A: Top 14% of scores B: Scores below the
NeX [460]

Answer:

Grades between 62 and 64 result in a D grade.

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 = 71.9, \sigma = 7.8

Find the numerical limits for a D grade.

D: Scores below the top 84% and above the bottom 10%

So below the 100-84 = 16th percentile and above the 10th percentile.

16th percentile:

This is the value of X when Z has a pvalue of 0.16. So X when Z = -0.995.

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

-0.995 = \frac{X - 71.9}{7.8}

X - 71.9 = -0.995*7.8

X = 64

10th percentile:

This is the value of X when Z has a pvalue of 0.1. So X when Z = -1.28.

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

-1.28 = \frac{X - 71.9}{7.8}

X - 71.9 = -1.28*7.8

X = 62

Grades between 62 and 64 result in a D grade.

6 0
3 years ago
What is the answer to life?
kolezko [41]

Answer:

you

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the measure of angle X?<br><br> Enter your answer in the box.<br><br> M
slava [35]

Answer:

x = 47

Step-by-step explanation:

Every triangle's interior angles add up to 180°.

Let's make an equation.

x + 102 + 31 = 180

x + 133         = 180

x                   = 47

8 0
3 years ago
Read 2 more answers
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