How many grams of pure acid must be added to 40 grams of a 20% acid solution to make a solution which is 36% acid?

In the diagram below, tan θ = sqrt 3. what is the value of m?

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.

Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old