The prevalence of blood types in the us population is o+: 37.4%, a+: 35.7%, b+: 8.5%, ab+: 3.4%, o–: 6.6%, a–: 6.3%, b–: 1.5%, and ab–: 0.6%. 1) a sample of 24 subjects is randomly selected from the us population. what is the probability that 8 subjects are a+. random variable x describes the number of a+ subjects among 24 selected. find ex and var x.

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition