The pie chart shows information about pupils in KS3 at a school.​

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 .

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?