White - 20 marbles
black - 30 marbles
beige - 40
there are are also purple marbles in the bag. which of the following can not be the probability of randomly selecting a purple marble from the bag ?
a. 1/10
b. 1/5
c. 2/5
d. 7/15

( give an explanation)

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?