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2 years ago

HELP ASAP PLZ IM TIMED

Mathematics

1 answer:

suter [353]2 years ago

8 0

Answer:

165cm

Step-by-step explanation:

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Based upon extensive data from a national high school educational testing program, the standard deviation of national test scor

rjkz [21]

Answer:

<h2>The standard error of the mean is 7.56</h2>

Step-by-step explanation:

The standard error of the mean is defined as the ratio of standard deviation to the square root of the sample size of a data. The standard error of the mean is mathematically expressed as shown below;

$X = \frac{\sigma}{\sqrt{n} }$

X is the standard error of the mean

$\sigma$ is the standard deviation

n is the sample size.

Given;

$\sigma = 121\\n = 256$

On substitution into the formula we have;

$X = \frac{121}{\sqrt{256} }$

$X = \frac{121}{16} }\\$

X ≈ 7.56

5 0

2 years ago

6th grade math, help me please.

lawyer [7]

Answer:

1/2 pounds per tablespoon

Step-by-step explanation:

48 ounces of chili = 3 pounds of chili

Because he used 2 tablespoons of chili powder in the first batch, he used 6 tablespoon of chili powder in the 2nd batch. Which is a lot!

So for every tablespoon he used, he had 1/2 pounds of ground beef alongside it! I hope this helped!

7 0

3 years ago

Solve system by using substitution: 5x + 3y = -4 <br> y - 2x = 6

horrorfan [7]

Answer:

x = -11/3, y = -4/3

Step-by-step explanation:

$y-2x=6\\y = 2x + 6$

$3(2x + 6) = -4\\6x + 18 = -4\\6x = -22\\x = -11/3$

$3y = -4\\y = -4/3$

5 0

2 years ago

What is 5.6 minus 4.8

Zanzabum

Answer:

5.6 - 4.8 = 0.8

Step-by-step explanation:

5.6 - 4.8 = 0.8

6 0

3 years ago

Which expression is equivalent to

eimsori [14]

Answer:

C. $-\sqrt[3]{x}^5$

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers