3 years ago

What is the answer to 9-(-11)

Mathematics

2 answers:

GenaCL600 [577]3 years ago

6 0

Your answer would be 20.

GaryK [48]3 years ago

6 0

9 - - 11

the two negatives become positive

9 + 11 = 20

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Answer: C. $\dfrac{1}{3}$

Step-by-step explanation:

Given: Box contains 8 green balls and 4 purple balls.

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event 1 = first picking green ball

event 2 = second picking purple balls.

As first ball was replaced, that means both events are independent.

Probability that you have selected a green ball and then a purple ball = P(purple ball )

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The required probability $=\dfrac{1}{3}$ , so C is correct option.

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