An acid is prepared by mixing 400 mL of water and 100 mL of pure sulfuric acid. What is the percentage by volume composition of sulfuric acid?
A. 15 %
B. 20%
C.25%
D.30%

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.