Find the largest number δ such that if |x − 1| < δ, then |5x − 5| < ε, where ε = 0.5.

Identify the number as a rational or irrational. explain. 127

Solve the triangle. a = 21°, c = 105°, c = 5

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.