Friday
April 18, 2014

Homework Help: math

Posted by c on Wednesday, July 4, 2007 at 12:51pm.

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

height= 3x+2
base= 2

Area of a triangle equals 1/2 base times height

so...

(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

3x+2=85

See if you can solve for x from this point

Just ask if you need any more help :-)

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