The ratio of boys to girls in a room is 4:9.
There are a total of 39 people in the room.

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

In . -15, -7, 1, a)7,13,19,21 b) 10,19,28,37 c)9,17,25,33 d)7,15,25,37

Which is the equation in slope-intercept form for the line that passes through (3, 7) and is perpendicular to 3x-5y=8 a. y=5/3x+2 b. y=3/5x+2 c. y=-5/3x+12 d. y=-3/5x+5