Which ratio forms a proportion with 5:15
10:20 75:5 3:1 1:3
WILL MARK AS BRAINLIEST HELP PLESEE

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

What is the range for 31,39,29,34,37,24,36,33,34,28

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2