Apicture frame has a perimeter of 40 inches. its length is 2 inches greater than one-half its width. let w represent the width of the picture frame, and let l represent the length. which system of equations can be used to find the dimensions of the picture frame?

2l+2w=40
l=2+1/2w

2l+2w=40
l=1/2w-2

lw=40
l=1/2w-2

lw=40
l=2+1/2w

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%