Cody was 165 cm tall on the first day of school this year which was 10% taller than he was on the first day of school last year how tall was Cody on the first day of school last year

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

What percent of 18 is 24? and plz explain thx.

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.