Find the measure of ∠C if

∠A =
5
2
x + 30
∠B =
7
2
x + 40
∠C =
9
2
x + 10
∠D =
5
2
x + 20

There are 4 cups in a quart and 4 quarts in a ganon.jug of water? . how many cups are in a 5-gallon jug of water?

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

How many solutions does the nonlinear system of equations graphed below have?