Aboy is 3 years more than twice as old as his sister. his sister is 6 years old. how old is the boy? a) 9 b) 15 c) 16 d) 20

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false