Ask question

Ask question

All categories

4 years ago

13

If a sample of 362 customers were taken from a population of 5530 customers, could refer to the variance of how many of the cust

omers' ages?

1 answer:

aalyn [17]4 years ago

3 0

Answer: 37

Step-by-step explanation:

You might be interested in

Which phrase describes density? height of a point above sea level force pushing on an area or a surface amount of mass in a cert

Mrrafil [7]

A surface amount of mass in a certain volume amount of matter an object contains.

I believe the second sentence is the answer since density is the measurement that compares the amount of matter that an object has to its volume.

6 0

3 years ago

Read 2 more answers

Rewrite the function by completing the square. 4x^2-4x+1=0

andrey2020 [161]

Do in <u>completing the square method.</u>

${4x}^{2} - 4x + 1 = 0 \\ 4x^{2}-4x=-1 \\ \frac{4x^{2}-4x}{4}=\frac{-1}{4} \\ x^{2}+\frac{-4}{4}x=\frac{-1}{4} \\ x^{2}-x=\frac{-1}{4} \\ x^{2}-x+\left(-\frac{1}{2}\right)^{2}=-\frac{1}{4}+\left(-\frac{1}{2}\right)^{2} \\ x^{2}-x+\frac{1}{4}=\frac{-1+1}{4} \\ x^{2}-x+\frac{1}{4}=0 \\ \left(x-\frac{1}{2}\right)^{2}=0 \\ \sqrt{\left(x-\frac{1}{2}\right)^{2}}=\sqrt{0}$

Now simplify.

$x-\frac{1}{2}=0 \\ x-\frac{1}{2}=0 \\ \\ \rightarrow \: x=\frac{1}{2} \\ \rightarrow \: x=\frac{1}{2}$

So, answer is..

$\boxed{x=\frac{1}{2} }$

Now <u>rewrite</u> the equation.

$4 x ^ { 2 } - 4 x + 1 = 0 \\ \boxed{4\times \left(\frac{1}{4}\right)-4\times \left(\frac{1}{2}\right)+1=0 }$

<u>Verification :-</u>

$4 x ^ { 2 } - 4 x + 1 = 0 \\ 4\times \left(\frac{1}{4}\right)-4\times \left(\frac{1}{2}\right)+1=0 \\ 1-4\times \left(\frac{1}{2}\right)+1=0 \\ 1-\frac{4}{2}+1=0 \\ 1-2+1=0 \\ -1+1=0 \\ \underline{ 0 = 0} \: \\ \dashrightarrow \text{true}$

3 0

3 years ago

A team of runners is needed to run a 1/4 -mile relay race. If each runner must run

Sveta_85 [38]

Answer:

4 runners

Step-by-step explanation:

I divided 1/4 by 1/16 and got 4 as an answer.

Hope this helps :)

(Correct me if i am wrong)

8 0

4 years ago

Read 2 more answers

The perimeter of an equilateral triangle is 51 feet.what is the length of one of its side?explain your work

satela [25.4K]

Hello!

The answer is: 17 ft.

Explanation:

To find this out, just divide the perimeter, and the amount of sides in a triangle, which is 3. This will only work with equilateral triangles because an equilateral triangle has all three sides the same length. Anyway, divide 51 and 3. (51 / 3 = 17) Just to make sure, you can add three 17's together, 17 + 17 + 17 = 51, the perimeter.

I hope this helped! ~Q

4 0

3 years ago

Read 2 more answers

Instructions: Find the missing side of the triangle.

Marrrta [24]

Answer:

100

Step-by-step explanation:

$30 + 50 + x = 180$

$80 + x = 180$

$x = 180 - 80$

$x = 100$

5 0

2 years ago