The following are the ages (years) of 5 people in a room: 18, 21, 12, 12, 23
A person enters the room.
The mean age of the 6 people is now 22.
What is the age of the person who entered the room?

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

How do you convert 1.27 to a percentage