mellobunbun
01.03.2020 •
Mathematics
The measure of 3 angles in a triangle are in 1:2:3 ratio. what is the measure of the middle angle?
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Ответ:
60 degrees
Step-by-step explanation:
1:2:3=180
1x+2x+3x=180
6x=180
x=30
1=30
2=60
3=90
middle=2=60
60 degrees
Ответ:
According to the empirical rule, 99.7% of data will fall within 3 standard deviations from the mean. Using this information, we have
619+3(42) and 619-3(42)
619+126 and 619-126
745 and 493