Which number below is a factor of 15 but not a multiple of 3?

Don't know how to find x given these segment lengths

Which must be true in order for the relationship △zyv ~ △xwv to be correct? zy ∥ wx ∠z ≅ ∠y and ∠w ≅ ∠x zv ≅ vy and wv ≅ vx ∠z ≅ ∠x and ∠w ≅ ∠y

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