Question

I need the answers ?

Answer 1

HI=1/2*EF

17-3x=1/2*-9x+37

2(17-3x)=-9x+37

34-6x=-9x+37

-6x+9x=37-34

3x=3

x=3/3

x=1

now substitute the value of HI

17-3x

=17-3*1

=17-3

=14

Explanation:

Note :HI=1/2*EF because the straight line joining the mid points of two sides of a triangle is parallel to the third side and equal to half of it.