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lord [1]
3 years ago
8

Adam was going to sell all of his stamp collection to buy a video game. After selling half of them he changed his mind and did n

ot sell the rest. He then bought ten more, How many did he start with if he now has 31?
Mathematics
1 answer:
Roman55 [17]3 years ago
6 0
He would have 21 before he bought the 10 stamp because 31-10=21
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Option B: a counterclockwise rotation of 90° about the origin

Explanation:

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The transformation rule for a coordinate to reflect a counterclockwise rotation of 90° about the origin  is given by

(x,y)\implies (-y,x)

Let us substitute the coordinates of the figure A

Thus, we have,

(0,2)\implies(-2,0)

(-1,6)\implies (-6,-1)

(-4,4)\implies(-4,-4)

Thus, the resulting coordinates are equivalent to the coordinates of the figure A'.

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Assume you have sea water that weighs 64 lb/ft³ and contains 35 parts per thousand (0.0035) dissolved salt by weight. How many c
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