Question

Find the area of the triangle. A = 1/2 b h. Simplify to the simplest polynomial form.
explain: see attachment!

Answer 1

http://curriculum.kcdistancelearning.com/courses/ALG1x-HS-A06/b/Exams/7HW5/7HW5_q9.gif

Answer 2

We know that the area of a triangle is given by: \[\frac{ 1 }{ 2 }bh\]
From the figure, we can see that base and height are given:\[\frac{ 1 }{ 2 }(2x+2)(7x-3)\]
Factoring out a 2 and cancelling it out with 1/2:\[=\frac{ 1 }{ 2 }2(x+1)(7x-3)\]
\[=>(x+1)(7x-3)\]
Multiply out and reduce:\[=7x^2-3x+7x-3\]
\[=>7x^2+4x-3\]
I hope it makes sense.

Answer 3

thanks!