Answer:
no
Step-by-step explanation:
Answer: Donna is wrong. Mean weight is 7.1kg
Calculate the mean for the bricks:
4 bricks have a mean weight of 5kg = 4 * 5
5 bricks have a mean weight of 9kg = 5 * 9
1 green brick is 6kg
= (4 * 5 ) + ( 5 * 9) + 6
= 71kg
Mean = 71 / (4 + 5 + 1)
= 7.1 kg
the quotient of 18 and 3 is 6
do the inverse and get 6x3=18
3^2+3^2=18
root 18 = 3root2
