The following are the ages (years) of 5 people in a room: 12 , 17 , 13 , 20 , 15 A person enters the room. The mean age of the 6 people is now 17. What is the age of the person who entered the room?

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

If chord ab is congruent to chord cd, then what must be true about ef and eg?