Randomly choosing a student from a class consisting of 20 boys and 10 girls, and randomly choosing a student from another class consisting of 10 boys
and 20 girls

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.

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

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64