8th Grade ILEARN Review

The area of a square is 90 square feet. What is the length, in feet, of the side of the square?

• √90

• √45

• 45

• 22.5

Object A weighs 1.25 × 10^8 milligrams. Object B weighs 6.55 × 10^11 milligrams. How many times heavier is object B than object A?

• 8.18 x 10^3

• 5.3 x 10^3

• 5.24 x 10^19

• 5.24 x 10^4

Object A weighs 1.25 × 10^8 milligrams. Object B weighs 6.55 × 10^11 milligrams. How much heavier is object B than object A?

• 5.24 x 10^4

• 6.54875 x 10^11

• 6.54875 x 10^3

• 5.24 x 10^11

Two fifths of the sum of a number and 4, plus -7 is -16. Write an equation that can be used to determine the number.

• 2/5(x + 4) - 7 = -16

• 2/5x + 4 = -7 + -16

• 2/5 + 4 - 7 = -16

• 2/5 + 4 + 7 = -16

Two fifths of the sum of a number and 4, plus -7 is -16. Determine the number.

• x = 15

• x = -37

• x = -26.5

• x = -16

Solve: 3/4(2x-7) + 1/2(x – 7) + 1/2x = -9

• x = -1/10

• x = 2

• x = -18/5

• x = -9

Determine whether the equation has one solution, infinitely many solutions, or no solutions: 5x-5 =5x-10

• One solution

• No solutions

• Infinite solutions

Determine whether the equation has one solution, infinitely many solutions, or no solutions: ½ (10x-20) = 5x-10

• One solution

• No solution

• Infinite solutions

Determine whether the equation has one solution, infinitely many solutions, or no solutions: 10x – 23 = 29 – 3x

• One solution

• No solution

• Infinite solutions

Determine whether the equation has one solution, infinitely many solutions, or no solutions: 1.45x = 0

• One solution

• No solution

• Infinite solutions