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borishaifa [10]
2 years ago
12

Simplify (-2√20k)(5√8k^3) completely

Mathematics
2 answers:
Elza [17]2 years ago
8 0

Answer:

D

Step-by-step explanation:

Correct on Edge 2020

RSB [31]2 years ago
5 0

Answer:

-40 square root of 10k²

Step-by-step explanation:

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Jane is making a suit which requires 2 5/8 yards for the jacket and 1 3/4 yards for the skirt. What the total amount of material
solmaris [256]

Answer:

4 3/8 yards.

Step-by-step explanation:

2 5/8 = (2*8 + 5)/8 = 21/8.

1  3/4 = (1*4 + 3) / 4 = 7/4.

21/ 8 + 7/4

= 21/8 + (7*2) / (4*2)

= 21/8 + 14/8

= 35/8

= 4 3/8.

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3 years ago
PLZ HELP AS FAST AS POSSIBLE! <br> What is the value of x?
Oksanka [162]

Answer:

In math, value is a number signifying the result of a calculation or function. So, in the example above, you could tell your teacher that the value of 5 x 6 is 30 or the value of x + y if x = 6 and y = 3 is 9. Value can also refer to a variable or constant

Step-by-step explanation:

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3 years ago
Study the expression below.<br> 6 − 2 · 3² + 4<br> What is the value of the expression?
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Answer:

-8

Step-by-step explanation:

6 + 4 = 10

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6 0
3 years ago
Read 2 more answers
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.02 level tha
docker41 [41]

Answer:

The p-value of the test statistic is 0.2019.

Step-by-step explanation:

Test if there is evidence at the 0.02 level that the medicine relieves pain in more than 384 seconds.

At the null hypothesis, we test if it relieves pain in at most 384 seconds, that is:

H_0: \mu \leq 384

At the alternative hypothesis, we test if it relieves pain in more than 384 seconds, that is:

H_1: \mu > 384

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

384 is tested at the null hypothesis:

This means that \mu = 384

For a sample of 41 patients, the mean time in which the medicine relieved pain was 387 seconds. Assume the population standard deviation is 23.

This means that n = 41, X = 387, \sigma = 23

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{387 - 384}{\frac{23}{\sqrt{41}}}

z = 0.835

P-value of the test:

The p-value of the test is the probability of finding a sample mean above 387, which is 1 subtracted by the p-value of z = 0.835.

Looking at the z-table, z = 0.835 has a p-value of 0.7981.

1 - 0.7981 = 0.2019

The p-value of the test statistic is 0.2019.

4 0
3 years ago
Will give Brainliest
MaRussiya [10]

Answer:

y-intercept is 2 .

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3 years ago
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