SOLUTION: Help!! I am in math two and need help really bad. I solved this problem: The height of a triangular window is 3 feet less than its base. If the area of the window is 20 square fee

Algebra.Com
Question 1104597: Help!! I am in math two and need help really bad. I solved this problem: The height of a triangular window is 3 feet less than its base. If the area of the window is 20
square feet, find the dimensions of the window. But I don't know if I got the correct answer. PLEASE show me the work and the answer. Thank you so so so soooooo much!!! Have a blessed day.
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
What answer did you get?
Answer by ikleyn(52786)   (Show Source): You can put this solution on YOUR website!
.
Let "x" be the length of the base (in feet).

Then the height is (x-3) ft, according to the condition.


The area of a triangle is half the product the base and the altitude.


It gives you an equation

 = 20,


x*(x-3) = 2*20 = 40

x^2 -3x - 40 = 0,

(x-8)*(x+5) = 0 ====>  x= 8 is the only positive solution.


Answer.  The base is 8 ft.  The height is 8-3 = 5 ft.

Solved.


RELATED QUESTIONS

Please help me solve this equation: The height of a triangular window is 3 feet less... (answered by Alan3354)
i am very confused on most things i think that i not only need a tutor for this, but a... (answered by rapaljer)
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter (answered by josgarithmetic)
I need help solving this problem. I know its A^2 + B^2=C^2 but I do not know where each... (answered by rothauserc)
hi, my name is nikki, and i am having a problem understanding how in solving an equation... (answered by longjonsilver)
I'm really bad at word problems. This one i am lost and i don't get. Find 3... (answered by Edwin McCravy)
I need help on this new form of equation that we're learning in school that I still don't (answered by richwmiller)
I am in algebra 2 this year. also i am really bad at any math. i need help on how to... (answered by jim_thompson5910,richwmiller)
Two cars leave town traveling in opposite directions.one travels at 80 km\h and the other (answered by josgarithmetic)