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Andrej [43]
2 years ago
15

What is 12.5% of 72? A. 9 B. 10 C. 12.5 D. 90

Mathematics
2 answers:
Scilla [17]2 years ago
7 0

Answer:

9

Step-by-step explanation:

12.5/100 = 0.125

Since there were 2 zeros, we took the point 2 places back.

0.125 in fraction = 1/8

1/8 x 72/1 = 9/1

= 9

katrin2010 [14]2 years ago
5 0

Answer:

A. 9

Step-by-step explanation:

% = 1\100

SO..

12.5% = 12.5\100

the word 'of' is the same as the mathematical multiply.

12.5\100 x 72 = 9

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aniked [119]
If the volume is 108, and the height is 3 meters, you would divide 108 by 3 , which is 36.
8 0
3 years ago
A ski area has a high-speed lift that can move 2,400 skiers to the top of the mountain each hour. Write an expression describing
mihalych1998 [28]

Answer:

2,400h

Step-by-step explanation:

You multiply the amount of skiers per hour (2,400) by the amount of hours (h).

7 0
3 years ago
Please don't put links:(​
GalinKa [24]

1/2 brainlest please

Step-by-step explanation:

It would be 0 then 1/2 then 2/2 then finally 1

7 0
3 years ago
Solve the system of equations algebraically. Show all of your steps
Katyanochek1 [597]
I am going to explain this using the substitution method, considering it appears to be the best in this situation.

We know (from the bottom equation) that y can equal 3x+20. Using this knowledge, we substitute the y in the top equation for 3x+20. Now, we have an equation that looks like this:

3x+20=x^2+2x

Now we need to move x to one side and then do some radicals (square roots).
Subtract the 2x on the right (since it is smaller, negatives = NONONO), which will give you

x+20=x^2

Now, we take the square root of both sides to get

rad(x+20)=x

Now we have to simplify. 20 doesn't have a square root, but 4 goes into 20, and 4 has a square root of 2. This now becomes

2rad(x+5)

This doesn't simplify any further... we have a problem... no way to isolate x as far as my knowledge goes... Sorry, can't help you any further than that, but another person or your teacher might be able to. R.I.P...
4 0
3 years ago
Audryn left a $12 tip on a $68.73 restaurant bill. What percent tip did she leave? Round to the nearest tenth of a percent.
Fiesta28 [93]
So, if we take 68.73 to be the 100%, what is 12 in percentage off of it?

\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
68.73&100\\
12&p
\end{array}\implies \cfrac{68.73}{12}=\cfrac{100}{p}\implies p=\cfrac{12\cdot 100}{68.73}

seems Audryn is being generous, she probably got the silverware and the maple leaves tablecloth.
4 0
4 years ago
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