The angles below are supplementary. What is the value of x? A pair of supplementary angles is shown. One angle measures 4x + 20, and the other angle measures 40.
answers:
5
7.5
15
30

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?