Three tables are placed side by side. One table is 4 feet 6 inches wide, another is 3 feet 9 inches wide, and the third is 4 fee
1 answer:
You might be interested in
Answer:
a) 910
b) 828100
c) 144320
Step-by-step explanation:
a. ∑y
This is the sum of all values of y. So
b. (∑y)^2
This is the square of the sum, so the square of 910, that we found in the previous item.
910² = 828100
c. ∑y^2
This is the sum of the squares of each amount spent. So