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3 years ago

QUICK QUICK PLEASE! 1 MINUTE ONLY! WITH EXPLANATION PLEASE!

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

<h2>first you add 60 plus 40 equals 100 then add 80 plus 50 equals 130.add 130 + 100 =230 then add 90 which is 320 next add 9 the you get 329</h2>

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Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator. 56 : 48

dangina [55]

Answer:

7/6

Step-by-step explanation:

divide both the numerator and denominator by 8

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2 years ago

The standard deviation of a normally distributed population is 24.0. A sample of size 4 is randomly selected. The standard error

Vlad1618 [11]

The standard error of the mean is 12.

The standard error of the mean points to the standard deviation of the distribution of a sample mean obtained from a population.

The standard error S.E of the mean can be calculated by using the formula:

$\mathbf{S.E = \dfrac{\sigma }{\sqrt{n}}}$

where;

standard deviation $\sigma$ = 24
sample size n = 4

$\mathbf{S.E = \dfrac{24 }{\sqrt{4}}}$

$\mathbf{S.E = \dfrac{24 }{2}}$

S.E = 12

Learn more about the Standard error of the mean here:

brainly.com/question/5327639?referrer=searchResults

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2 years ago

What is 3x - 7x? <br> • -4x<br> • 4x<br> • -10x

balu736 [363]

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$3x - 7x$

Factor x

$x(3 - 7) = x( - 4) = - 4x$

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Thus the correct answer is the first option.

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2 years ago

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guapka [62]

The answer is C

Explanation

21^2 + x = 221^2

484 cm

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2 years ago

Read 2 more answers

Does the graph represent a porportional relationship why or why not

Akimi4 [234]

Yep, it’s on the line

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2 years ago