Finding a percent of a number

Mathematics

1 answer:

Vlad [161]3 years ago

8 0

Turn the percent into a decimal . Ex: 80% = .80 as a decimal. Then divide.

You might be interested in

What is the number in standard form? 3.23×1012

d1i1m1o1n [39]

3.23 x 10^12...basically, u start at the decimal and count 12 spaces to the right
3.230000000000...now remove the decimal 3,230,000,000,000

6 0

3 years ago

Read 2 more answers

HELP!!!!!!!! Select an expression that id equivalent to 4squareroot of 2x^2 • 4squareroot of 2x^3

earnstyle [38]

Answer:

Step-by-step explanation:

$\sqrt[4]{2x^2} *\sqrt[4]{2x^3} =(2x^2)^{1/4}*(2x^3)^{1/4}\\= 2^{1/4}*(x^2)^{1/4} *2^{1/4} * (x^3)^{1/4}\\$

combine like terms

$= 2^{2/4} *x^{2/4}*x^{3/4}\\= 2^{2/4} * x^{5/4}$

these steps use exponent laws

a few key ones i used:

(x^y^z) = x^(y*z)

x^y * x^z = x^(y+z)

let me know if you have any questions!

8 0

2 years ago

Every hour of training raises the salary $

Nadya [2.5K]

Answer:

20 dollars

Step-by-step explanation:

Difference in salary between any two hours with a 10 hour gap is 200 dollars

so for on hour it is 20$

8 0

3 years ago

The mean of the scores obtained by a class of students on a physics test is 42. The standard deviation is 8%. Students have to s

NemiM [27]

The correct answer is:
16%.

Explanation: 
We use a z-score to answer this question.
The formula for a z-score is:
z= $\frac{x-mue}{sigma}$ ,
where mue is the mean and sigma is the standard deviation.

Using our information, we have:
z= $\frac{50-42}{8} = \frac{8}{8} = 1$ .

Using a z-table, we see that the area to the left of, or less than, this score is 0.8413. We want to know how many students scored more than this, so we subtract from 1:
1-0.8413=0.1587, which rounds to 16%.

7 0

3 years ago

Read 2 more answers

Translate math sentence in solution.

Aleksandr [31]

Answer:

$x + 9$