Which is the best method to solve quadratic equation = x^2+x=10

1. what is the measure of ∠abc? what is the measure of ∠abd?

What is the first step of an indirect proof of a number that is divisible by two

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