How are adding, subtracting, dividing, and multiplying rational expressions are similar and different?

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.

The sum of five and a number n is at least 12

If angle ase measures 168 degrees, find the measure of angle dse. the figure mag not be drawn to scale