A) control group, they did not also survey 10 other ppl who took a placebo
Area = Length x Width
A square has even sides so
576 = x^2
so find the square root of 576 and you have your answer
12.075
Explain:
Price after mark-up: 10*115% = 11.5
Price after sales tax: 11.5 * 105% = 12.075
Answer:
1/3 of 3 hours should be 20 minutes
