Answer:
u=5.23
Step-by-step explanation:

It would be a 50/50 chance that all of them would be girls
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Factorized
To factor
, we will have to do it by grouping.

is your answer.
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Answer:
18.5
Step-by-step explanation:
Answer:
His score decreased by 9 percent this time.
Step-by-step explanation:
From his first history exam he had a score of 90 percent. The difference between his first score and present score is given by
90 - 81 = 9