Find the mean of the data given. Number of the contacts in five friends’ phones: 47 ,47 , 26, 73 , 61

The mean number of contacts in the 5 phones is?

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10