Here are the approximate populations of three countries, expressed in scientific notation: Panama: 4\times10^6; Peru: 3.2\times10^7; Thailand: 7\times10^7. Lin says that more than 20 times as many people live in Thailand than in Panama. Is this correct? If not what is the correct answer? Explain how you know.

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?