What’s one way to check your answer to 5x6=30?

What is the distance between (–2 1/2,-3) and (1, –3)?

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%

(x-5)1/2+5=2 what is a possible solution?