posted by c .
ABC is a right-angled triangle atB. AB=(3x+2)cm and BC=2CM.GIVEN THAT THE AREA OF THE TRIANGLE IS 85CM SQUARE FIND THE VALUE OF X.
Say that the
Area of a triangle equals 1/2 base times height
(1/2) of the base is 1
and 1 times the height (3x+2) is 3x+2
Since the area equals 3x+2 and 85 you can set those numbers equal to each other to solve for x
See if you can solve for x from this point
Just ask if you need any more help :-)