Which pair of ratios form a proportion? a. 2 : 3 and 3 : 4 b. 8 : 12 and 16 : 20 c. 4 : 7 and 12 : 21 d. 9 : 15 and 10 : 16

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Drag the titles to the correct boxes to complete the pairs. the probability that kevin has diabetes and the test