Answer: Donna is wrong. Mean weight is 7.1kg
Step-by-step explanation:
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
IT is c i checked using all the steps
Answer:
$63.00 is the closet answer.
12.70 x 5
12.7
× 5
------------------
13
63.5
Therefore, 12.7×5=63.5.
$63.5
I would use quaro is is faster.
