A chemist needs a 20% solution of alcohol. How many liters of 15% solution should be added to 4 liters of 40% solution to get a 20% solution?

What is 3.2 m converted to centimeters? A. 3.2 cm B. 32 cm C. 320 cm D. 0.032 cm

A pencil and a ruler cost 2.50 together. The ruler costs $1.00 more than the pencil. How much is the pencil

There are 36 cans of beans and 48 cans of corn. the display designer wants an equal number of each vegetables in each row. what is the greatest number of cans of corn that can be in each row?

Is the sample representative of the population? population: all football fans sample: people in randomly selected seats at one football game A representative B not representative

Whats 81:45 in its simplest form?

The function f (x) = - x2 - 2x + 15 is shown on the graph. What are the domain and range of the function?

Let the test statistic Z have a standard normal distribution when H0 is true. Give the P-value for each of the following situations. (Round your answers to four decimal places.) (a) Ha: μ > μ0, z = 1.73 P-value = (b) Ha: μ < μ0, z = - 2.

Solve the proportion of 8/13=v/8

Together, Amy and Thea make up 1/4 of the midfielders on my the soccer team. How many midfielders are on the team? Show your work

What is the difference between dash and hyphen