The length of a rectangle is 9 inches and its perimeter is 48 inches. what is the width of the rectangle?
a. let x represent the unknown width of the rectangle. write an equation that can be solved for the unknown measurement.
b. solve your equation to find the width of the rectangle. show all your work.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone