Answers by visitors named: Niq

What kind of triangle is it? If it is an isosceles triangle, you can set the equations equal to each other and solve for x.

Solve for ONE of the variables in ONE of the equations, then plug that into the OTHER equation. For example if you have 1. x + 3y = 5 2. 2x - 6y = -2 Solve for x in eq. 1. -----> x = 5 - 3y Plug 5 - 3y into eq. 2 -----> 2(5-3y)-6y= -2 10-6y-6y=-2 10-12y=-2 -12y=-2-10 -12y=-12 y = 1 Then plug y=1 into one of the equations to solve for x. x + 3(1)= 5 x+3=5 x=5-3 x=2 Finally if you want to check your answer, plug x and y into one or both equations 2 + 3(1)= 5 2+3=5, check! 2(2)-6(1) = -2 4-6=-2, check!

solve for x: x-1=1 x=1+1 x=2 plug x=2 into the first equation & solve for y: 2+y=1 y=1-2 y=-1

6!= 1x2x3x4x5x6 = 720 3!= 1x2x3 = 6 therefore 6!/3! = 720/6 = 120

It has something to do with the Fibonacci sequence but the numbers are slighty off so I can't quite figure the pattern... The fibonacci sequence is 0,1,1,2,3,5,8,13,...