Three lines intersect at point O. Find m∠1+m∠2+m∠3.

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3

∠a and ∠ b are complementary. if m∠ b = 80°, what is the measure of ∠ a? 10° 80° 90° 100°