A certain bean plant grows 15% of its height each day. Express this as a decimal. Then, today after 10 days, the bean plant is now 27 inches tall. How tall was it yesterday?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)