Agroup of friends wanted to compare their average running speeds. they recorded the distance and amount of time each person ran one saturday morning.
select all the runners whose speeds are in a proportional relationship with each other.

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2