What are two numbers that multiply to be - 150 and add up to 19

The lengths of pregnancies are normally distributed with a mean of 264 days and a standard deviation of 15 days. if 36 women are randomly selected, find the probability that they have a mean pregnancy between 264 days and 266 days.

Michelle buys 13 bags of gravel for her fish aquarium. If each bag weighs 12 pounds, how many pounds of gravel did she buy?

Which of these systems of linear equations has no solution? A. 2 x + 8 y = 15. 4 x + 16 y = 30. 2 x minus B. y = 18. 4 x + 2 y = 38. C. 4 x + 7 y = 17. 8 x minus 14 y = 36. D. 4 x minus 3 y = 16. 8 x minus 6 y = 34.

A $10 bill is worth how many / pennies.

Given the frequency table, what percentage of the students that like rap are also in grades 9-10? Round to the nearest whole percent. Band Preference for School Dance Rap Rock Country Row totals Grades 9-10 40 30 55 125 Grades 11-12.

another system of equations with the same number of solution that use the first equation only 12 y+51 y=156 and - 8x-34y=-104

You are asked to choose your favourite season of the year, and then your second favourite season. Draw a tree diagram to display the number of different possible outcomes.

What are the two formulas for circumference? Are they the same? Explain why.

Zack sells full-grown ostriches for $925 and full-grown llamas for $890 each. Zack sold one less than twice as many llamas as ostriches this year. His total sales for the year were $23,455. How many llamas did Zach sell during this year?

A large wooden prism will be covered with spray paint for a prop in a school play. The prop must be painted on all sides. A can of spray paint costs $4.00 and will cover 40 square feet. What is the cost to paint the box?