Can angles be named with two letters?

Which number is irrational? a) 16 b) 18 c) 25 d) 36

If square root x = -7, then x= -49 true or false

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 .