3.8+7.6+9.3+31+43+54+62+89+107+119+123+127=775.7
775.7/12=64.64166666666667
So the mean is 64.64
For the answer to the question above, to solve these questions, use this formula: X3= F(X1-X2) Y3= F(Y1-Y2)
Where X3 is the X value in the coordinate your solving for, F is the fraction,
X1 is the first X and X
2 is the second X Plug in your numbers to fit this: X3= 1/4 x (0--2) Y3= 1/4 x (4- -3) By solving you get: (-.5, 1.75)
Well there is 1 girl for every 5 boys so you could add 1 + 5 to get 6, and divide the total students by 6 to get 38 girls.
Is it asking for the perimeter of a square?
