What is the slope of a line perpendicular to the line whose equation is 3x-3y=54

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom