suppose that a certain vector has its components doubled. by what multiplicative factor is the angle of the vector change?

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

All of the following are free tools to you prepare for the sat except

Which situation is the best example of opportunity cost? a country chooses to produce bananas instead of wheat. a country chooses to invest in manufacturing and agriculture. a country chooses to specialize in producing paper products. a country chooses to export all of its products.