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3 years ago

-a/2=10 what is the value of a

Mathematics

1 answer:

Naddik [55]3 years ago

5 0

Answer:

-20

Step-by-step explanation:

(-a/2=10)/-1

=a/2=-10

a=-10*2

a=-20

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Solve the system:<br> x - y = 5<br> 4x – 5 y =17

diamong [38]

Answer:

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Step-by-step explanation:

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ratelena [41]

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olga_2 [115]

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A and B are independent events. If P(A) = 0.50 and P(A and B) = 0.20, find P(B).

rewona [7]

The independent events are illustrations of probability, and the value of P(B) is 0.40

<h3>How to determine the value of P(B)?</h3>

The given parameters are:

P(A) = 0.50

P(A and B) = 0.20

Two events A and B are independent, if

P(A and B) = P(A) * P(B)

So, we have:

0.50 * P(B) = 0.20

Divide both sides by 0.50

P(B) = 0.40

Hence, the value of P(B) is 0.40