A pharmacist wants to make 23 ml of a 45% hydrogen peroxide solution. How many mls of 32% hydrogen peroxide must he mix with 55% hydrogen peroxide to make the desired solution?

Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides.should be his answer

0. a square do not enter sign has a height and width of feet. will the area of the sign be greater than or less than 2 1/2 square feet? explain how you know and then find the actual area.

1) a researcher is studying a population of bats in which 16% of the population has a certain trait. the researcher wants sampling distribution with a standard deviation that is less than 2%. which sample sizes could the researcher use? select all that apply : a)n=200 b) n=300 c) n=400 d) n=500 2) from a normal distribution population, a simple random sample of size 38 is taken. the mean of the sample is 82 and the standard deviation of the sample is 4. what is the 90% confidence interval for the population mean? round to the nearest tenth ( [1], 83.1)