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earnstyle [38]
2 years ago
6

In a class of 32 students, the mean height of the 14 boys is 1.56 meters, the mean height of all 32 students is 1.515. Work out

the mean height of the girls
Mathematics
1 answer:
vaieri [72.5K]2 years ago
6 0

Answer:

I'm not sure but I did do it on a calculator so 1.515-1.56= -0.045

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Slav-nsk [51]

Answer:

7x + 34 = 90

-34          -34

7x = 56

Divide by 7 on both sides:

X = 8 degrees

A right angle equals 90 degrees so that must mean angle 7x + 34 must equal to 90 so we solve for x.

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\sf \rightarrow  3y = 2 - x

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\sf \rightarrow y = -\dfrac{1}{3} x+ \dfrac{2}{3}

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