A chemist needs to make 40 ml of a 25% acid solution. He has a 5% acid solution and a 30% acid solution on hand. If he uses the 5% and 30% solutions to creat the 25% solution, how many milliliters of each will he need?

Find the slope between (2,-3) and (4,3)

At what root does the graph of f (x) = (x+4) ^6 (x+7) ^5 cross the x axis?

What are the like terms and coefficients in 2m+3m-m

Simplify the following equation: y+y

Work this travel problem based on the data provided in the various tables in this section. What percentage decrease occurred in air fatalities between the "high year" and the following year (to the nearest percent) ? a0 %

Blanca has $38,800 in a savings account. The interest rate is 9% per year and is not compounded. How much interest will she earn in 9 months? simple interest

Rita is hiking along a trail that is 14.3 miles long. So far she has hiked along one-tenth of the trail How far has Rita hiked? Rita has hiked miles

How do you find the surface area of a rectangular prism?

If y varies directly as x, and y=9 when x=7, find y when x=14.

The school has an acceptance rate of 15%. 15% of the students that apply get in. The school took in 1800 students last year. How many students applied?