Which of the following are necessary when proving that the diagonals of a rectangle are congruent? Check all that apply.

One shelf in the greenhouse holds 467 plants. How many plants can 6 shelves hold

Simplify by using order of operations: 20 - (4-2) + (5 - 3) - 2

Write the difference 20 - (-48) as a sum. Then simplify.

Principle fourth root of 81

Round 486.78 to the nearest hundredths

George has sold $75 worth of sandwiches at his concession stand today. Each sandwich sells for $5. He hopes to sell at least $600 worth of sandwiches over the course of the entire day.

What fraction is equivalent to 3/5

Rachel deposited $200 into an account that earns 6% interest compounded twice a year for 10 years

For which polygon is the sum of the interior angles equal to 720? A: quadrilateral B: pentagon C: hexagon D: septagon

Kevin and Randy Muise have a jar containing 85 coins, all of which are either quarters or nickels. The total value of the coins in the jar is $ 14.25. How many of each type of coin do they have?