SOLUTION: one adjacent is 12cm, the other is x. The hypotenuse is x+8. What is x? I can work it out by trial and error and get the answer 5, but how do I get it using algebra?
Algebra.Com
Question 565556: one adjacent is 12cm, the other is x. The hypotenuse is x+8. What is x? I can work it out by trial and error and get the answer 5, but how do I get it using algebra?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
one adjacent is 12cm, the other is x. The hypotenuse is x+8. What is x?
----------------
Equation:
(x+8)^2 = 12^2 + x^2
-----
x^2 + 16x + 64 = 144 + x^2
16x = 80
x = 5
=================
Cheers,
Stan H.
=================
RELATED QUESTIONS
The product of five consecutive integers is 360 360 what is the mean of the five... (answered by ankor@dixie-net.com)
how do i work out what X is if the Hypotenuse is 25, on side is x and the other is 2x???? (answered by mananth)
My problem is the following, I can work out the answer by trial and error, but I figure... (answered by bmauger)
My basic thought is this;
x - x(y) = z
Where x represents my gross pay, y... (answered by nerdybill)
A right prism with a square base has a height of 8cm and a volume of 128cm^3. Find the... (answered by Edwin McCravy)
If the difference between two numbers is 5, and the difference between the squares of... (answered by TimothyLamb)
The sum of two numbers is 40 the difference is 8 what are the two numbers ..
I know what (answered by ice_water35)
what is the slope (-8,12) and how do you work it to get the... (answered by Alan3354)
I need help in solving two missing sides (X and Y) of a right triangle. The hypotenuse... (answered by ramkikk66)