Subtract.

answers:
3x + z + 9
3x - 16y - z + 9
3x - z + 9

The product of two negative rational numbers is always zero sometimes zero never zero

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?