3 years ago

Need help anyone know

Mathematics

2 answers:

EleoNora [17]3 years ago

7 0

The answer is D 22 units

Stella [2.4K]3 years ago

3 0

I think the answer is b

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Write 270 as a product of its prime factors

marshall27 [118]

$270 = 90 \times 3 \\\\ = 3\times 3\times 5\times 2\times 3\\\\= \boxed{\bf{2\times 3^3 \times 5}}$

5 0

3 years ago

Determine the value of x in the figure. answers: A) x = 90 B) x = 40 C) x = 45 D) x = 135

guapka [62]

Answer:

Please mark be brainliest and I hoped this helped!

x = 45°

Step-by-step explanation:

Since this is an isosceles triangle, that means that x, and the angle opposite from x, are the same. We take 135° and subtract that from 180°. That gives us 45°. Since the angle opposing x is 45°, then x is 45° as well.

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3 years ago

A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large

Zanzabum

Answer:

$\sigma=547.1125$

Step-by-step explanation:

-The margin of error is calculated using the formula:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\$

-We substitute the values, n=900 and ME=30 in the formula to solve for standard deviation:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\\\30=1.645\times\frac{\sigma}{\sqrt{900}}\\\\\sigma=\frac{30^2}{1.645}\\\\=547.1125$

Hence, the population standard deviation is 547.1125

7 0

3 years ago

PLEASE HELP ME!!! The sum of two numbers is 46. When 30 is subtracted from 5 times the smaller the result is 3 times the larger.

Ipatiy [6.2K]

Answer:

m = 21

n= 25

Step-by-step explanation:

the equations are:

n + m= 46

5m-30 = 3n

plz vote brainliest :)

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3 years ago

S.V.P URGENT! Mégane à payé 345$ pour un iPod avec des taxes de 14.975% et un rabais de 5%. Quel est le prix régulier ( problème

weqwewe [10]

Answer:

6383.08

Step-by-step explanation:

J'ai dû utiliser google translate, mais j'espère que cela vous aidera.

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3 years ago