Which of the following is not a perfect square? A. 50 B. 49 C. 121 D. 1

Mathematics

2 answers:

MArishka [77]3 years ago

7 0

A. 50
Because there’s no number multiplied by the same number once equals 50

luda_lava [24]3 years ago

6 0

50 is not a perfect square because it doesn’t have a square root.

Hope this helped :)

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aev [14]

Answer:

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Step-by-step explanation:

Given:

Probability of doing yard work is, $P(A)=53\%=0.53$

Probability of raining, $P(B)=68\%=0.68$

Probability of doing yard work and it raining is, $P(A\cap B)=15\%=0.15$

Now, two events A and B are independent if,

$P(A|B)=P(A);P(B|A)=P(B)$

Conditional probability of event A given that B has occurred is given as:

$P(A|B)=\frac{P(A\cap B}{P(B)}\\P(A|B)=\frac{0.15}{0.68}=0.22$

So, $P(A|B)=0.22\ and\ P(A)=0.53$

Since, $P(A|B)\ne P(A)$ , A and B are not independent events.

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3 years ago

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Rina8888 [55]

Answer:

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1 year ago

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Answer:a)9

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Step-by-step explanation:

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