So unfortunate, calculators haven't been invented yet :/
But let me save you from the trouble mate-
1) 1.0075
2) 1.0671
3) 8.105
4) 6.1001
5) 8.1898
6) 0.243
7) 0.3365
8) 1.5553
9) 0.5575
10) 2.8878
He needs to find the mean of the the heights. The mean is the average.
Answer:
x=4
Step-by-step explanation:
4(3+2x)+2=46
12+8x+2=46
12+8x=44
8x=32
x=4