Math 7a using number sense to solve equations

1. are the triangles similar and if so why? what is the value of x? show your work.

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]