What type of sampling is this: Group the students in a local college by year and then randomly select 15 students from each group

Brittany is making hair bows to sell at a craft show. Each hair bow requires 3/4 yard of ribbon. Brittany plans to make 50 bows. How many yards of ribbon does Brittany need to purchase?

The ratio of boys to girls in homeroom 2:3. If there are 8 boys, how many girls are there?

Is it possible for two equations to have more than one solution? what would that look like?

Tiana's math test score are 85 and 91. she has one more test left. in order to earn and a, her average test score must be at least 94. let x represent tiana's score on her next test.

Jayda takes 4 hours to deliver 448 newspapers on her paper route. What is the rate per hour at which she delivers the newspapers?

What is the product? (9t-4) (-9t-4) a) - 81t^2-16 b) - 81t^2+16 c) - 81t^2 - 72t+16 d) - 81t^2 + 72t+16

The mean weight of 8 girls is 55kg and the mean weight of a group of boys if 52kg. the mean weight of all the students is 53.2kg. how many boys are there?

Six times the sum of a number and four

Solve: The total cost (C) in dollars for building a house of x square feet is given by the function C (x) = 50,000 + 155x. If the total cost was $283,275.00, how many square feet was the house?

Simplify the algebraic expression. y2 + 11y - 6y + y2