The height of a triangle is 4 ft more than its base, x. The area of the triangle is 6 ft2. Which equation can be used to find x?

A) 6=1/2(x^2+4)
B) 6=1/2(x^2-4)
C) 6=1/2x(x+4)
D) x^2+4x

Question

The height of a triangle is 4 ft more than its base, x. The area of the triangle is 6 ft2. Which equation can be used to find x? 

A) 6=1/2(x^2+4)
B) 6=1/2(x^2-4)
C) 6=1/2x(x+4)
D) x^2+4x

anonymous · Answer

What's the equation for area of a triangle?

anonymous · Answer

A=h(Little b) B/2

mathstudent55 · Answer

$\large A_{triangle} = \dfrac{bh}{2} $

anonymous · Answer

But its still unclear to me how to put it in

anonymous · Answer

They gave you that A = 6 and b = x.
The height is 4 more than x. How would you write the height?

anonymous · Answer

$$6=\frac{ x(x+4 )}{ 2}$$ right? Than what

anonymous · Answer

That's it! That's option C

anonymous · Answer

Oh! I feel stupid ok awesome I was over thinking it! Thank you!

anonymous · Answer

you're welcome