Posted by Valentine on Thursday, March 3, 2011 at 12:02pm.
height = X-cm,
Base = (X + 8)cm,
A = bh/2 = (X + 8)X/2 = 64,
Multiply both sides by 2:
(X + 8)X = 128,
X^2 + 8X = 128,
X^2 + 8X - 128 = 0,
(X - 8)(X + 16) = 0,
X - 8 = 0,
X = 8.
X + 16 = 0,
X = -16.
Use the + value of X:
X = 8cm = height.
X + 8 = 8 + 8 = 16cm = base.
Related Questions
Algebra Word Problem - COULD SOMEONE PLEASE HELP ME WITH THIS !!!!!!!!!! The ...
math - The base of a triangle is 5cm greater than the height. The area is 18cm^2...
algebra 2 - ok supposed the base of a triangle is 5 cm greater than the height ...
math - The base of a triangle is 3 cm greater than the height. The area is 14cm^...
7th grade math please help Ms. Sue - 4. Find the area for a triangle: base 14, ...
Math - Find the area for a triangle: base 14 cm, height 5.5 cm. 19.5 cm² 77...
math - The base of a triangle is 6 cm greater than twice the height.The area is ...
Math - Application of Quadratic Equations The base of a triangle is longer than ...
math - The base of a triangle is 10 cm longer than the height. Determine the ...
math - The area of a triangle with base b and height h is given by the formula A...
For Further Reading
