Which could be the measures of the three angles of an acute triangle?

a.
45°, 55°, 80°

b.
35°, 45°, 100°

c.
45°, 45°, 90°

d.
20°, 50°, 110°

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.