In the expression 12r what values of r makes the expression equal a number less than 12

1. are the triangles similar and if so why? what is the value of x? show your work.

Is a positive integer raised to a negative power always positive

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%