A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen peroxide solution. How many liters of the 10% solution did the chemist use to make the 15% solution?

How do you write out in expanded form 35.245 in fractions

A rectangular painting measures 1212 inches by 1414 inches and contains a frame of uniform width around the four edges. The perimeter of the rectangle formed by the painting and its frame is 7676 inches. Determine the width of the frame.

And outdoor swimming pool cost eight dollars per day to visit during the summer. there is also a $25 yearly registration fee. is the total cost proportional to the total number of days visiting?

20d + 13 - 12d = - 14

17/85 in simplest form

A chemist is using 364 millimeters of a solution of acid and water. if 16.8% of the solution is acid, how many millimeters of acid are there?

Harriet plans to file using Single federal income tax return with her husband. Together, they made $145,000 last year. They also received $500 in interest from a CD they own together. They have no children.

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 148 ft, and ball 2 is dropped from a height of 203 feet.

If 4+6+7=242854 6+6+7=364217 6+7+8=424828then 7+5+8=?

the numbers 30 to 74 are in a hat. If the probability of drawing a multiple of 2 is 23/45. What is the probability of not drawing a multiple of two?