Since the triangle is isosceles, the third angle will be x.
We know that the sum of the angles is 180. Here, it's 3x+x+x=5x.
Thus 5x=180, so x=...
also need some help with this too
John bought 3 shirts and 4 pairs of socks for $78.
Joan bought 2 shirts and 6 pairs of socks for $72.
Letting $x equal the price of a shirt and $y equal the price of a pair of socks, write a linear equation to represent each transaction.
Draw on the same axes the graphs of the two equations. Read off the co-ordinates of the point of intersection to find the values of x and y.
i came up with this
3x + 4y = 78
2x+ 6y = 72
im not sure how do the graph