janet is 4 years younger than jeff. marcia is twice as old as janet. the sum of their ages is 36 years. how old is each person?

Jonathan worked at McDonald's 20 hours per week and earned 192 $ use the equation 20h = 195 to find Johnathan hourly wage ...

Are the fractions 5/6, 5/7, 5/8, and 5/9 and arranged in order from greatest to least? Explain.

A quadratic equation is shown below: 3x^2 - 15x + 20 = 0 Part A: Describe the solution (s) to the equation by just determining the radicand. Show your work. Part B: Solve 3x^2 + 5x - 8 = 0 by using an appropriate method.

If x+y=10 and x-y=4 then x2=?

U={a, b, c, d, e, f, g, h} A={c, f, h} B={a, f, h} C={a, b, d, e, g} Find set (AnB) u (AnC)

Suppose that textbook weights are normally distributed. You measure 28 textbooks' weights, and find they have a mean weight of 76 ounces. Assume the population standard deviation is 12.3 ounces.

ABC Bookstore rents a storage space that is 75 ft x 50 ft and 15 ft high. It is charged $2.50 per square foot. How much does ABC Bookstore spend on storage space? O A. $140,625 O B. $9375 O C. $2500 O D. $3750

31/9 as a mixed number

Find 4x when 3x equals 3

Solve 64x3 - 1 = 0.