I am lost on this assignment and need help can someone do this step by step so I won’t fail this class 1. A set of data consists of the following scores:
7 3 9 5 4
For these data, find the values for:

a. ∑X2 b. ( ∑ X)2 c. ∑ X2 + 5

2. Summation notation for two variables.
The following data consists of pairs of scores ( X and Y ) for four individuals.

X Y

5 8
2 10
3 11
7 2
Determine the values of the following expressions:

A. ∑ X Y B. ∑(X)( ∑Y)

answer: the first graph

step-by-step explanation:

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

happy to

pls mark as brainliest