Jeff can put shingles on a house in 9 hours while david can shingle the same house in 6 hours. if the two work together, how long would it take them to shingle the house? about 3 hours about 3 hours and 30 minutes about 4 hours about 4 hours and 30 minutes

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

In which form is the following function written? y = - 2(x – 3)(x + 5)