How do you get an angle sum of a triangle?

Solve the system of equation using subtraction 3x+2y=7 y=-3y+11

Find the value of x and BC if B is between C and D CB=4x-9 BD=3x+5 and CD = 17

The fact that sin (150°) =.5 and sin (-150°) = -.5 implies that the sine function is which type of function? A) odd B) even C) neither D) cannot be determined

The area of the figure is square units.

What would x+y=9 and x+3=y be in slope intercept form?

Whats 300 times 400? then add 500

Tina's swimming lesson started at 5:30 P. M. and ended at 6:25 P. M. How long did the swimming lesson last?

Solve - 1/2x>8 graph solution

Michale is traveling from San Francisco to Houston this morning. The flight will take 4 3/10 hours to complete. If the airplane travels 368.8 miles per hour, how many miles will the airplane travel? Explain

What is the correct first step to solving the equation x^2=10-3x