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3 years ago

13. After Valentine's Day, boxes of chocolates go on sale and are marked down 10%. The

Mathematics

1 answer:

Anna007 [38]3 years ago

5 0

Answer:

$27.00

Step-by-step explanation:

First, 10% of 30 = 3.

Second, 30 - 3 = 27

Hope this helps!

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I WILL MARK YOU BRAINLIEST!

guajiro [1.7K]

Answer:

the answer is 12 inches

every inche equals 15 feet from 30/2 then divide it by the total 180/15 which equals 12

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Use the simple interest formula to find the unknown quantity. I = prt I = $9 p = $450 r = 4% t =

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Answer:

1/2

just did this on edgenuity:)

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3 years ago

What is the value of x to the nearest tenth?

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Answer:

I'm not 100% sure on this but I think it would be C- 8.1

Step-by-step explanation:

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What is the quotient 2y^-6y-20/4y+12 ÷ y+5y+6/3y^2+28y+27

malfutka [58]

Answer with explanation:

$\rightarrow \frac{\frac{2y^2-6 y-20}{4 y+12}}{\frac{y^2+5 y+6}{3 y^2+28 y+27}}\\\\\rightarrow \frac{\frac{y^2-3y-10}{2 y+6}}{\frac{(y+2)(y+3)}{3 y^2+28 y+27}}\\\\\rightarrow \frac{\frac{(y-5)(y+2)}{2 (y+3)}}{\frac{(y+2)(y+3)}{3 y^2+28 y+27}}\\\\\rightarrow \frac{(y-5)(y+2)}{2 (y+3)}} \times {\frac{3 y^2+28 y+27}{(y+2)(y+3)}}\\\\ \rightarrow\frac{(y-5)\times(3 y^2+28 y+27)}{2 (y+3)^2}}$

→y²+5y+6

=y²+3 y+2 y+6

=y×(y+3)+2×(y+3)

=(y+2)(y+3)

→y² -3 y-10

=y² -5 y+2 y -10

=y×(y-5)+2×(y-5)

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3 years ago

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Li keeps track of the time he spends working out each week. The table shows the number of cardio workouts and the number of weig

Dmitry [639]

Step-by-step explanation:

1)X represents the time he spent in cardio.

Y represents the time he spent in weighted.

2)If you could put the options on the second one it would be better.

3)4x+y=210

3x+2y=195

y=210-4x

3x+2(210-4x)=195

3x+420-8x=195

5x=420-195

5x=225

x=45

y=30

Total time of one cardi and weighted = 75min= 5/4 h.

4)2x+4y=

90+120=210 total time of week three.

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