In the diagram, R, S, and T are all points of tangency. What is the perimeter of triangle XYZ?

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

Reflect the point (7,0) across the y-axis

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?