How to revise effectively

Zuri made 2 spheres using plaster. The smaller sphere has a radius of 6 cm. The larger sphere has a radius of 24 cm. How much greater a volume of plaster did Zuri use for the larger sphere? Use 3.14 to approximate pi.

Are the lines y = - x + 8 and 3x + 3y = 9 perpendicular? Explain.

Cuanto es 9/5 como porcentaje

Tyler jogs less than 2 miles each day. After 10 days he has jogged n miles. Which inequality can be used to find the number he might have jogged?

Solve the equation for y. Then find the value of y for each value of x. y + 4x = 9; x = - 2, 0, 4

5. Given beverage sales of $5,400 and cost of beverages sold of $900.00, the beverage cost percent is:

Paul Woonan, a self employed accountant, is married and enrolls in a non-group health insurance plan. The plan costs $7,710 per year for the family coverage. What will he pay each month in premiums?

At a movie rental machine the movies rent for $3.00 expect on Tuesday when they rent for $0.49. Approximately what percent of the regular cost

Mrs. Petruzziello's class is working on a math project. There are 5 groups. Mrs. Petruzziello has 3 packs of construction paper for everyone to share. What fraction of a pack will each group get to use?

The equation of the graphed line is 2x - y = - 6. What is the x-intercept of the graph? - 3 - 2 2 6