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
20 7
----- = ------
100 x
100 x 7 = 700
700/20 = 35
X = 35
Answer:
18
Step-by-step explanation:
Answer:
11 easy
Step-by-step explanation:
5 plus the three from the three more makes 8 eight minus 19 is 11