Answer:
The weighted average is of 69.94.
Step-by-step explanation:
Weighted average:
The weighed average is found multiplying each grade by its respective weight.
The grades, and weights are:
67 on the lab, with a weight of 23% = 0.23
69 on the first major test, with a weight is 21.5% = 0.215
85 on the second major test, with a weight is 21.5% = 0.215.
63 on the final exam, with a weight of 34% = 0.34.
Weighted average:

The weighted average is of 69.94.
3/4 x 6 = 18/4 = 4 1/2
she eats 4 1/2 bags of carrots in 6 weeks
I’m not 100% but my best guess is 20.
Answer:
20
Step-by-step explanation:
48 is the perimeter, all sides in a square are equal, you take 12 * 4 which gives you 48.
For the area, you take two sides, length and width, and you multiply them, 12 * 12, this gives you 144.