Express the difference in the simplest form; 3t^2/5-4t^2/15

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

What is the absolute value of the complex number -4- 2 v14 3.15 14 18

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?