Hummingbirds beat their wings many times per second. Which equation relates the number of wing beats per second (a) to the number of wing beats per minute (b) The choices are: b=60/a b=a/60 b=a+60 b=60a

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%

The table above shows approximate conversions from gallons to liters. what is the value of x?

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?