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alexdok [17]
3 years ago
14

Rewrite in radical form

Mathematics
2 answers:
Marianna [84]3 years ago
5 0

Answer:

6 1/3

Step-by-step explanation:

tresset_1 [31]3 years ago
5 0
Can you help with my questions please
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The College Boards, which are administered each year to many thousands of high school students, are scored so as to yield a mean
Marysya12 [62]

Answer:

a) 15.87% of the scores are expected to be greater than 600.

b) 2.28% of the scores are expected to be greater than 700.

c) 30.85% of the scores are expected to be less than 450.

d) 53.28% of the scores are expected to be between 450 and 600.

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 = 500, \sigma = 100

a. Greater than 600

This is 1 subtracted by the pvalue of Z when X = 600. So

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

Z = \frac{600 - 500}{100}

Z = 1

Z = 1 has a pvalue of 0.8413.

1 - 0.8413 = 0.1587

15.87% of the scores are expected to be greater than 600.

b. Greater than 700

This is 1 subtracted by the pvalue of Z when X = 700. So

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

Z = \frac{700 - 500}{100}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% of the scores are expected to be greater than 700.

c. Less than 450

Pvalue of Z when X = 450. So

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

Z = \frac{450 - 500}{100}

Z = -0.5

Z = -0.5 has a pvalue of 0.3085.

30.85% of the scores are expected to be less than 450.

d. Between 450 and 600

pvalue of Z when X = 600 subtracted by the pvalue of Z when X = 450. So

X = 600

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

Z = \frac{600 - 500}{100}

Z = 1

Z = 1 has a pvalue of 0.8413.

X = 450

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

Z = \frac{450 - 500}{100}

Z = -0.5

Z = -0.5 has a pvalue of 0.3085.

0.8413 - 0.3085 = 0.5328

53.28% of the scores are expected to be between 450 and 600.

6 0
2 years ago
How can the distributive property be used to find 4x875?draw an array.
ICE Princess25 [194]
Break apart the 875.
8 becomes 800 the 7 becomes 70 and 5 is just 5. Now x it by the 4
800x4=3200
70x4=. 280
5x4=. 20
-------
3500
Not sure how to show the array on here
6 0
2 years ago
3 + x(-2) = 10<br>step by step ​
alina1380 [7]

Steps to solve:

3 + x(-2) = 10

~Simplify

3 - 2x = 10

~Subtract 3 to both sides

-2x = 7

~Divide -2 to both sides

x = -3.5

Best of Luck!

6 0
3 years ago
For the exterior angles(s) given, name the remote interior angles​
Archy [21]

Answer:

hi my name david what ur namw

7 0
3 years ago
Need help and don’t just give answer have a explanation at least then i’ll give u brain list
juin [17]

Answer:

11.75

Step-by-step explanation:

Interior angles in a quadrilateral sum to 360.

Opposite angles in a parallelogram are the same.

360=118+118+(4x+15)+(4x+15)

= 236 + 8x + 30

= 266 + 8x

8x = 360 - 266 = 94

x=94/8 = 11.75

5 0
2 years ago
Read 2 more answers
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