How do you do this? its 5 marks. please help​

Select the lengths in centimeters that would form a right triangle

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 inequality has a dashed boundary line when graphed ?