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15.11.2020 •
Mathematics
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Ответ:
Step-by-step explanation:
It is easy to notice that:
QA=QB=QCAs per triangle congruence theorem (two congruent sides and a right angle)
Since:
QB = x + 9 and QC = 5x - 4We have
x + 9 = 5x - 45x - x = 9 + 44x = 13x = 13/4x = 3.25QA = QB = QC = 3.25 + 9 = 12.25
Ответ:
74% of 315 = 233.1
Step-by-step explanation:
Rate per 100 in simpler term is called a percentage.
Per-cent, as the word suggest, means every part out of 100.
So to find 74% of 315, we will take a ratio of 74 to 100 and multiply it with 315 to find the percentage as shown below:
74% =
= 
Therefore, 74% of 315 is equal to 233.1.