Ida scored an average of 74 marks for maths and science. she scored an average of 83 marks for maths and english. how many more marks did she score in english than in science?

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.

Anyone know? is appreciated! will mark brainliest if correct!

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=