If 25 cm' of a quantity of marbles has a mass of 45 g, calculate the density of the marble in kg/m

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

Find the distance between (0,5) & (-4,2)