Posted by jackie on Thursday, September 2, 2010 at 1:07pm.
h = x-cm
b = (x + 3) cm
A = 14 cm^2
A = h * b / 2,
x(x + 3) / 2 = 14cm^2
Multiply both sides by 2:,
x(x + 3) = 28,
x^2 + 3x = 28,
x^2 + 3x - 28 = 0,
Factor the trinomial:
(x - 4) (x + 7) = 0,
x + 7 = 0, x = - 7;
x - 4 = 0 , x = 4 cm = h,
x + 3 = 4 + 3 = 7 cm = b
6
Related Questions
algebra - The base of a triangle is 3cm grater than the height. The area is 14cm...
Algebra Word Problem - COULD SOMEONE PLEASE HELP ME WITH THIS !!!!!!!!!! The ...
math - The base of a triangle is 3 cm greater than the height. The area is 14cm^...
geometry - the base of a triangle is 3cm greater thanthe height.the area is 27cm...
Pre algebra - find the area of the triangle with base 2 1/5 yards and height 5/8...
Algebra - How do you find the area of a shaded area in a triangle and assume the...
math - i have trouble finding the answer to this and how to srt. there is a ...
math - The base of a triangle is 5cm greater than the height. The area is 18cm^2...
algebra - The base of a triangle is 7cm greater than the height. the area is ...
Algebra - The base of a triangle is 8cm greater than the height. The area is ...
For Further Reading
