Solving systems of equations by substitution
-5x-8y=17
2x-7y=-17

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

The statements below can be used to prove that the triangles are similar. ? △abc ~ △xyz by the sss similarity theorem. which mathematical statement is missing? ∠b ≅ ∠y ∠b ≅ ∠z