Kevin, michael and darren all do their own laundry at home. kevin does his laundry every 9 days, michael every 10 days, and darren every 12 days. if they all did their laundry today, in how many days will the three of them all do their laundry again on the same day?
a. 100 days
b. 144 days
c. 180 days
d. 212 days

The equation m = 19.32v can be used to find the mass m in grams of a pure gold coin with volume v in cubic centimeters. carl has a coin with a mass of 37.8 grams. the coun's volume is 2.1 cubic centimeters. could the coin be pure gold? explain your reasoning. whoever answers this correctly gets marked brainliest! this is also worth a decent amount of points than normal questions!