Look at the subtraction expression: 3/8−7/8

Which of these addition expressions is equivalent to the subtraction expression above?

(38)+(−78)

(−38)+(78)

(−38)+(−78)

−[(−38)+(−78)]

Which math sentence can be used to determine if the triangle is a right triangle?

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)