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ira [324]
3 years ago
12

A student cost for last semester at her community college was $3000. She spent $540 of that on books. What percent of last semes

ter’s college costs was spent on books? Please give explanation
Mathematics
1 answer:
eduard3 years ago
3 0
Hi there!
We can set up a ratio to model the problem...
540/3000 = x/100
Now, just cross multiply and solve for x.
54000 = 3000x
x = 18
Therefore, 18 percent of last semester's college costs was spent on books. Hope this helped and have a great day!
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3x+4=17x-10 what is x
Alisiya [41]

Answer:

x=1

Step-by-step explanation:

3x+4=17x-10

Subtract 4 from both sides:

3x+4-4=17x-10-4

3x=17x-14

Subtract 17x from both sides:

3x-17x=17x-14-17x

-14x=-14

Divide both sides by -14:

\frac{-14x}{-14}=\frac{-14}{-14}

x=1

4 0
3 years ago
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Please answer fast!!!!!
BlackZzzverrR [31]

Answer:

x = 2

Step-by-step explanation:

note that 4096 = 8^{4} , then

8^{2x} = 8^{4}

Since bases on both sides are equal, both 8 , then equate the exponents

2x = 4 ( divide both sides by 2 )

x = 2

6 0
3 years ago
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This is a picture of a cube and the net for the cube.<br> What is the surface area of the cube?
posledela

Answer:

6a²

Step-by-step explanation:

6×5² = 6×25 = 150cm²

thank you

8 0
2 years ago
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Six more than nine times a number is 456 translate to an equation then solve
Sliva [168]

6+9x=456

Subtract 6 from both sides

6-6+9x = 456-6

9x = 450

Divide each side by 9

X = 50

Plug it in 6+9(50) = 456

6+450 = 456

8 0
3 years ago
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-72 by 8<br> A) -9 <br> B) -8 <br> C) 7 <br> D) 8
monitta

<u><em>Hi there! :) :D</em></u>

<u><em>Answer:</em></u>

<u><em>A. -9</em></u>

<u><em>*The answer must have a negative sign.*</em></u>

Step-by-step explanation:

Lesson: Dividing integers

First, you divide by the numbers from left to right.

72/8=9

It change positive to negative sign.

72/9=8

Then, you can also multiply by the numbers from left to right.

9*8=72

8*9=72

<u><em>Final answer is -9</em></u>

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thank you so much! :)

:D

8 0
3 years ago
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