How to work out a position to term rule in sequences​

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.

Explain how you can use the associative property to evaluate (7x50)x4.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')