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olga55 [171]
3 years ago
11

Perry was going to sell all of his stamp collection to buy a video game. After selling half of them he changed his mind. He then

bought fifteen more. How many did he start with if he now has 34?
Mathematics
1 answer:
andrezito [222]3 years ago
4 0
The answer is 38, because if you take away the 15 he bought afterwards (34-15) you get 19, and then since he sold half his collection you would double that (19×2) and that's 38.
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3 years ago
Read 2 more answers
What are the possible lengths and widths of a rectangle if its length is 8 centimeters longer than the width, and the area is le
WINSTONCH [101]
A = LW
A = (< = 33)
L = W + 8

W(W + 8) < = 33
W^2 + 8W < = 33
W^2 + 8W - 33 < = 0
(W + 11)(W - 3) < = 0

W + 11 < = 0
W < = -11 (extraneous solution)

W - 3 < = 0
W < = 3 <===

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8 0
3 years ago
Which is the value of this expression when j= -2 and k= -1?
UNO [17]

Answer:

-64

Step-by-step explanation:

I just simplify the like terms to make it easier visually. After that, I plugged in j and k and solve for the answer which is -64.

3 0
3 years ago
If 2x + a=b solve for x.
Vitek1552 [10]

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2x = b - a   Divide both sides by 2

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3 years ago
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