Aboat traveled 210 miles downstream and back. the trip downstream took 10 hous. the trip back took 70hours. what is the speed of the boat in still water. what is the speed of the current

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15