U can multiply 5/6 by 4 and u get 20/24.so she has 4 more questions left to finish Hope this helps:)
We know that
the length of Q is 25% more than the length of p
so
length Q=1.25*40--------> 50 cm
the area of Q is 10% less than the area of p
Area Q=50*y
Area P=40*x
so
50*y=0.90*[40*x]---------> 50*y=36*x-------> x/y=50/36---> 25/18
the answer
the ratio x:y is 25:18
F(x) = 8x + 2x - 11x
f(x) = - x
B) In triangles ABC and ABD, one side and one common angle are equal