The chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Sum of a four digit number one digit number is 7231 the product number is 28908. what are the number?

An adult takes 400mg of ibuprofen. Each hour, the amount of ibuprofen in the person's system decreases by 29%. If 100mg of ibuprofen is left, how much time has passed? Use A = Pert

How does the slope of g (x) compare to the slope of f (x)

2 3 5 7 11 13 17 what number is next

How do you solve 1/8 as a fraction

Which formula gives the average rate of change of f (x) over the interval [8, 12]? A:f (8) - f (12) / 12-8 B:f (12) - f (8) / 8-12 C:f (12) - f (8) / 12-8 D:f (12) - f (8)

The equation below describes a circle. What are the coordinates of the center of the circle (x+5) ^2 + (y+7) ^2=21^2

What percent of a circle Is 3/12 of a circle

Kyle walks 3 blocks south from his home to school, and jana walks 2 blocks north from her home to kyle's home. how far and in what direction is the school from jana's home.

What's the greatest common for of 32 and 52