All categories

4 years ago

I have two questions about math. Here they are:

1 answer:

7 0

M/n could be explained orally or in writing as "the quotient of m divided by n," or just "the quotient of m over n."

0=0 is an equation that has no variables, so the answer to your 2nd question is "no."

You might be interested in

PLEASE HELP ASAP I WILL MAKE YOU THE BRAINLEST

Alex

Answer:

$1,272

Step-by-step explanation:

Just add 1,200 (how much she borrowed) and 6/100*1200 (6 percent of 1200) and you will get the answer of $1,272

7 0

4 years ago

Select the polynomial that can be factored as (2x-5)^2

V125BC [204]

Answer:

d. 4x^2-20x-25

Step-by-step explanation:

So, we have to multiply (2x-5) by itself. That gives:

(2x-5) (2x-5) = 2x (2x-5) - 5 (2x-5) = 4x² - 10x -10x + 25

so, the correct answer is 4x² - 20x + 25

It's just important to multiply each component carefully by using the distributive property.

6 0

3 years ago

A researcher has collected the following sample data. The mean of the sample below is 5.

abruzzese [7]

Answer:

The coefficient of variation is 72.66%

Step-by-step explanation:

Data : 3 , 5 , 12 , 3 , 2

We are given that The mean of the sample is 5.

Formula of standard deviation = $\sigma = \sqrt{\frac{\sum(x-\bar{x})^2}{n}$

Substitute the values :

$\sigma = \sqrt{\frac{(3-5)^2+(5-5)^2+(12-5)^2+(3-5)^2+(2-5)^2}{5}}=3.633$

Coefficient of variation= $\frac{\sigma}{\mu} \times 100=\frac{3.633}{5} \times 100 =72.66\%$

Hence The coefficient of variation is 72.66%

8 0

3 years ago

An item costs $420 before tax, and the sales tax is $33.60 . Find the sales tax rate. Write your answer as a percentage.

Marina CMI [18]

Answer: 12.60/420 = 0.03 = <span>3%</span>

3 0

3 years ago

Read 2 more answers

Please can you simplify -x+2z+x+2y

slavikrds [6]

Answer:

2y + 2z

Step-by-step explanation:

-x + 2z + x + 2y

= (-1 + 1)x + 2y + 2z

= 2y + 2z

Hope this helped!

3 0

3 years ago