Which equation is equivalent to the equation below?*
3x + 2x + 7-2 = 15

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c