What is the probability of rolling an even number or a perfect square using a 20-sided die?
1 answer:
Answer:
C) 12/20
Step-by-step explanation:
Between 1 and 20, 10 numbers are even, 4 numbers are perfect squares (1, 4, 9, and 16), and 2 numbers are both even and perfect squares (4 and 16).
So the probability is:
(10 + 4 − 2) / 20 = 12/20.
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Answer:
Choice A.

X=16
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Same with 52 and 13
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Answer:
Step-by-step explanation:
7(x-5)²=63
(x-5)²=63/7
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x = 5 + 3
or
x = 5- 3
x = 8 or 2
Answer:22%
Step-by-step explanation: