A scientist hopes to launch a weather balloon on one of the next three mornings. For each​ morning, there is a 40​% chance of suitable weather. What is the probability that there will be at least one morning with suitable​ weather? SOMEONE PLEASE HELP ME.

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

3x + 4y = 5 x- 3y = -7 solve by substitution

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years