How many liters of 10% alcohol solution and 5% alcohol solution must be mixed to obtain 40 liters of 8%

alcohol solution?

Devaughn's age is two times Sydney's age. The sum of their ages is 66. What is Sydney's age?

Find an equation of the line which is parallel to the line 4y=8x-5 and passing through (1,-3).

Write 81% as a decimal

Find the domain of the relation: { (-3, - 4), (-1, 2), (0, 0), (1, 3), (5, 4) } a. {-4, 2, 3, 4} b. {-3,-1, 0, 1, 5} c. {-4, - 3, - 1,0, 1, 2, 3, 4, 5} d. {-4, 0, 2, 3, 4}

What kind of figure is a polygon

If one container holds 55 balls, how many balls will nine containers hold?

Round 156, 782 to nearest thousand and the nearest ten thousand.

Tracy can wallpaper 7 rooms in a new house in 21 hours. together with her trainee they can wallpaper the 7 rooms in 12 hours. how long would it take the trainee working by herself to do the job? round to the nearest tenth.

What important information must be included to find a sum of a series?

George is averaging 45 minutes of homework each school night most of the time george has five days a week and his school year lasts for 36 weeks about how many minutes of homework will he do throughout the entire school year