The main rotor of a helicopter is spinning at a constant rate. The rotor makes 80 revolutions every
12 seconds. At what rate, in revolutions per minute,
is the rotor spinning?

What are “like terms”? why can we only add like terms?

In angle pqr find the measure of

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice