Someone please help me ASAP

Which best explains why this triangle is or is not a right triangle?

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.