The mean speed of vehicles in the "cars only" lanes of the new jersey turnpike is 68 miles per hour. the mean speed of vehicles in the "any vehicle" lanes is 64 miles per hour. what must be true about the mean speed of all vehicles on the turnpike, assuming these are the only types of lanes?

The measurement of one angle of a right triangle is 34°. what is the measurement of the third angle?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

(x-5)1/2+5=2 what is a possible solution?