The bedroom and office in the diagrams below are similar rectangles. The walls on the left sides in the diagram are proportional, and the walls on the top sides in the diagram are proportional. How long is the missing wall of the office (shown in red below)?

This doesn’t make sense to me it’s supposed to be lcm ( least common multiple )

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?