Question

Help me please!!!

Answer 1

since the dimensions of the smaller triangle is 2/7 that of the big triangle, the area should be (2/7)^2 , or 4/49, of the bigger one...
since the big triangle has area 20, take 4/49 of that for the area of the smaller triangle.

Answer 2

the area of the smaller triangle is 4/49 of the big one...

Answer 3

solve this proportion: \(\large \frac{x+3}{5}=\frac{4x-4}{4} \)

Answer 4

by similar triangles...

Answer 5

yes...:)