Since polygons are similar, the following ratio must be preseved:

By moving the number 20 to the right hand side, we get

which gives

now, by moving -5 to the right hand side, we have

then, x is given by

then, the answer is the second option: 6
<h3>
Answer: 400 (choice A)</h3>
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Explanation:
40% + 35% = 75% of the coins were either made before 1940, or made from 1940 to 1980. In other words, 75% of the coins were minted before 1980. This leaves 100% - 75% = 25% of the coins to being minted after 1980.
25% of 1600 = 0.25*1600 = 400 coins were made after 1980
Answer:
I think it's 9
Hope it helps
Step-by-step explanation:
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While x is the number of small shakes and y is the number of large shakes each size shake you by needs to be multiplied by the cost .... D: 3x+5y=479