Which method(s) can be used to solve a system of equations? select all that apply. distributing graphing substitution formulas addition modeling

∠aed is formed inside a circle by two intersecting chords. if minor arc bd = 70 and minor arc ac = 180, what is the measure of ∠ aed? a) 45° b) 50° c) 55° d) 60°

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°