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dexar [7]
3 years ago
8

How do u do percentages

Mathematics
2 answers:
melomori [17]3 years ago
5 0
By changing the number into a decimal, and then moving the decimal twice to the right. 
Nutka1998 [239]3 years ago
3 0
Hi , if you want to convert a fraction to a percent , you just have to divide the numerator and the denominator , then you have to move the decimal to spaces to the right , if you want to convert a decimal , you do the same process.
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The original price of a shirt was $20. It was decreased to $15. What is the percent decrease of the price of this shirt?
KIM [24]

Answer:

25%

Step-by-step explanation:

Price reduction = 20 - 15 = $ 5

Percent decrease of price = (5/20)*100 = 5*5 = 25%

6 0
3 years ago
Write as a fraction 56:120
Fudgin [204]
56:120 = 56/120 = 7/15
7 0
3 years ago
Read 2 more answers
Question:
snow_tiger [21]

Answer:

A (first picture)

Step-by-step explanation:

Based on the picture, the lines are both perpendicular and the red line splits AB into two equal parts (bisects it), so it must represent the perpendicular bisector of AB.

5 0
3 years ago
Add. <br> (−2+6x^3−3x^2)+(4x^3−5+x^2)
Gemiola [76]

Answer:

10x^3 - 2x^2 -7

Step-by-step explanation:

To subtract polynomials, you want to subtract the biggest exponent from the first polynomial to the second

so 6x^3 + 4x^3 and that would be 10x^3

then -3x^2 + x^2 and the negative is larger so it would be -2x^2

and finally -2 + -5 and that is -7

hope this helps! :)

7 0
2 years ago
I think of a number. I multiply it by 7. I add 12. The result is 40. What is the number I am thinking of?​
julia-pushkina [17]
The number that you are thinking of is 4. To get this answer I did the opposite of how you received your answer.
40 - 12 = 28
28 ÷ 4 = 7
The number that you are thinking of is 4.
8 0
2 years ago
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