Use the formula for radian measure to calculate the measure of a central angle in a circle having a radius
of 12 cm and intercepting an arc of 21 cm.
The angle has a measure of
radians.
DONE

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 .