2 years ago

What is 401 rounded to the nearest hundred

Mathematics

2 answers:

mariarad [96]2 years ago

7 0

Answer:

400

Step-by-step explanation:

morpeh [17]2 years ago

5 0

Answer:

400

Step-by-step explanation:

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I will give you brainliest !! please help!

astra-53 [7]

The answer is 1.47
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2 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

What is the measure of the angle x?

navik [9.2K]

AOB = 2 . x
2x = 60°
x = 30°

4 0

2 years ago

Solve the poprotion 38/25=n/12

ANEK [815]

Answer:

n = 18 6/25

Step-by-step explanation:

Multiply both sides by 12.

12(38/25) = 12(n/12)

456/25 = n = 18 6/25 = 18.24

8 0

3 years ago

Kylie explained that (negative 4 x + 9) squared will result in a difference of squares because (negative 4 x + 9) squared = (neg

Eva8 [605]

Given:

The given expression is:

$(-4x+9)^2$

According to Kylie,

$(-4x+9)^2=(-4x)^2+(9)^2$

$(-4x+9)^2=16x^2+81$

To find:

The correct statement for Kylie's explanation.

Solution:

We have,

$(-4x+9)^2$

According to the perfect square trinomial $(a+b)^2=a^2+2ab+b^2$ .

$(-4x+9)^2=(-4x)^2+2(-4x)(9)+(9)^2$

$(-4x+9)^2=16x^2-72x+81$

Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.

Therefore, the correct option is C.

4 0

3 years ago

Read 2 more answers