Working together Jill and Bill can tar a roof in 6.67 hours. Had he done it alone it would have taken Bill 15 hours how long would it take Hill to do alone?

Two-thirds of a number minus six is 2

Jose buys a skateboard for $90 at Target. The sales tax is 8%.

Find the value of the expression below. 8 (15-4) / 4^2-5

X * y = - 7 x + y = 12 What are the values of x and y?

The waiting time, in minutes, to see a teller at a large bank follows an exponential distribution. If the proportion of all customers who wait more than 15 minutes is 0.01, what is the mean waiting time for all customers?

Write a number sentence 3 time as many as 4

With the equation - 6+7x=y, what is the y-intercept?

Kevin is 42 years old and Daniel is 3 years old. How many years will it take until Kevin is only 4 times as old as Daniel?

Write the equation of the circle in standard form in order to answer this question x2 + y2 - 4x + 6y + 9 = 0 What is the radius of this circle?

I'm thinking of two numbers that multiply to get 8 and add to get 6.