HELP PLEASE ANSWER ASAP THANK YOU! ILL GIVE YOU 13 points I’ll give you a second reward which is the second picture

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.

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

What is the simplified form of square root of 400 to the 100th power ?