Cross products property 3/4 = v/14 what is v?

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?