X/9 = 25/x
x^2 = 225
x = 15
answer
15 units
7. (1,2),(0,-1)
slope = (-1 - 2) / (0 - 1) = -3/-1 = 3 <==
8. (-1,0),(1,-1)
slope = (-1 - 0) / (1 - (-1) = -1 / 2 <==
Answer: √10, √27, and √99 are all the irrational numbers from the list.
√10 = √(5*2) = √5 * √2 ----> irrational
√27 = √(9*3) = (√9) * √(3) = 3√3 ----> irrational
√99 = √(9*11) = (√9) * (√11) = 3√11 -------> irrational
√(49) = 7 -----> rational
√(64) = 8 ----------> rational
Answer:
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