In the early months of some year one site added 0.4 million new accounts every day. at this rate , how many days would be needed to add 24 million new accounts?

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm.it decreased by the same amount each year. what was the change in grandpa ernie's height each year

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?