Joan and her brother are saving their money to buy a stereo that costs $250. If Joan has $195.50 and her
brother has $58.50, do they have enough money together to buy the stereo?

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.