Which number is a solution to the quadratic equation below?

What is the value of x? enter your answer in the box. (cm)

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

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.