Brian multiplied his average speed of 14.73 miles per
hour by the amount of time he spent cross-country
skiing. His product was 11.0475.
Rounding to the nearest whole number, determin
whether Brian's product is reasonable.
Round Brian's average speed to
Round the activity time to
Was Brian's product reasonable?
Brian's Activity Time (hours)
3
1.45
Hiking
Mountain Biking
Horseback Riding
Cross-Country Skiing
1.2
0.75

Ihave a 69 and an 82. the 69 is worth 40% of my grade and the 82 is worth 15%. can someone tell me my current average grade.

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297