For a certain bathtub, the cold water faucet can fill the tub in 9 minutes. The hot water faucet can fill the tub in 11 minutes. If both faucets are used together, how long will it take to fill the tub?
Do not do any rounding.

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

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

2x minus y equals 6, x plus y equals negative 3