12-2/3x=x-18 so how do you answer this question

Suppose that an automobile manufacturer advertises that its new hybrid car has a mean gas mileage of 50 miles per gallon. You take a simple random sample of n = 30 hybrid vehicles and test their gas mileage.

The sum of the exterior angles of a convex polygon, one angle at each vertex, is equal to how many degrees?

A waitress at Espoo cafe received an 18% tip on a bill of $45. How much was her tip?

Which number is biggest 0.4, 3/4, 0.15

What is the solution to the system of equations 3x + 3 and y = 2x+1?

Can two cars be traveling the same speed but have difference velocities

Which colonial power's policy was based on assimilation of native peoples?

Contestants dance and I dance-athon rest for the same amount of time every hour a couple rests for 25 minutes in five hours how long did the rest in 8 hours?

If AD=6x+10 and CD=2x+12, find the length of AC

Determine which rational humber is greater by rewriting each pair of fractions using their LCD. 2/15, 4/25 2/5, 4/11