Posted by **Help now please** on Friday, August 30, 2013 at 2:19pm.

Find the value of x. Round u'r answer to the nearest hundredth, if necessary.

Area of triangle=108m^2

A=1/2 bh

b=(x+6)m

h=xm

So, 108m^2=1/2 ((x+6)m)(xm)

108m^2=1/2 m^2+x^2+6????

If so then what? Sub m^2 from the left side?? Then what? :/

- Geometry/Algebra 1/12th grade -
**Steve**, Friday, August 30, 2013 at 3:13pm
I think the m means meters, as in unit of length: 6m

108 = 1/2 (x+6)(x)

x^2+6x-216 = 0

(x-18)(x+12) = 0

since we want a positive side, x=18m

If you really want to carry the m's along, just do so:

108m^2 = 1/2 (x+6)m*xm

= 1/2 x(x+6)m^2

Now the m^2's cancel out, and we proceed as at first.

## Answer This Question

## Related Questions

- Geometry - one of the ancient store pyramids in egypt has a square base that ...
- geometry - one of the ancient stone pyraminds in egypt has a square base that ...
- 7th grade math ASAP please - Help please i don't understand 2, 4, and 10 quick ...
- math - the area of the pool is 108m. what is the length of the pool if it is 9m ...
- Geometry - For the given dimensions, find the area of each figure. If necessary ...
- Maths - a rectangular chicken yard was built against an existing she wall. 30m ...
- Physics - Mary walks west at 2.0m/s for 15 seconds, then north at 3.0m/s for 2o ...
- Chemistry - 20.0 mL of HCl in a flask Titration required 12.3 mL of 0.108M Mg(OH...
- geometry - What is the perimeter of the isosceles triangle shown below? If ...
- geometry - An isosceles right triangle has a hypotenuse of 8 units. What is the ...

More Related Questions