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Feliz [49]
3 years ago
6

Joann wants to hang a wallpaper border around the top of her living room walls. The room is 13 ft. by 15 ft. How much border mus

t she purchase?
Mathematics
1 answer:
lara31 [8.8K]3 years ago
3 0
56ft of paper. You are looking for the perimeter of the room so 13*2+15*2=26+30=56 feet
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59.73 - 21.876 <br>can u help me​
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Answer:

37.854

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2 years ago
I’ve been stuck on this question since beginning of my freshman year! Someone please explain how to do this please??!
dexar [7]

Hi!

There might be different variations into how anyone would approach this problem but this is by far an easy way for me.

In order to solve fractional relationships with a variable, a perfect way to solve them would be to cross multiply and make them equal to each other.

You see the part '3y+12', and when you criss cross over to the other side of the equation, you get three. Multiply that together.

When you see the part '6', when you glide diagonally, you find '4y'. Multiply this together as well. Make them equal to each other.

(<em>This is how you do cross multiplication.)</em>

You should get something like this:

3(3y+12)=6(4y)              Distribute the three on the left side and multiply. Do the same on the right.

9y+36=24y                    Now, you can combine like terms by subtracting 9y to the other side.

36=15y                           Isolate y and divide it by 15.

y=2.4

I was unclear of the answer, so I plugged in 2.4 into the original equation where the y variable was, and got the right answer, so 2.4 should be the correct one no matter how you got it.

I hope this helped!

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