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# Help please?

1)4sqrt x=20

2)sqrt + sqrt y+7=7

3)sqrt x+11=sqrt x+1

4)If you are h feet above the earth's surface, the distance, d, that you can see is approximately d ( in miles) = sqrt 3h/2. Suppose you are on the roof of a building 900ft tall. How far can you see? Calculate to two decimal places.

5)-sqrt 3 (sqrt-3)

6) sqrt-25 sqrt-9

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