Andy writes an addition fact one addend is 9. the sum is 17.. what is the other addend? write the addition fact.

Anyone know? will mark brainliest if correct

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.

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities