Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: $214, $184, $31, $92, $148, $175, $7, and $57. Let y denote the amount spent on groceries by a single customer in a single visit. Find the following:

a. ∑y
b. (∑y)^2
c. ∑y^2

The correct answer is a. 908; b. 824464; c. 144904.

Step-by-step explanation:

Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: $214, $184, $31, $92, $148, $175, $7, and $57.

Let y denote the amount spent on groceries by a single customer in a single visit.

a. ∑y  = 214 + 184 + 31 + 92 + 148 + 175 + 7 + 57 = 908

b. (∑y = = 824464

c. ∑ = = 144904

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.