Math Mini-Test #2

Which of the following is a solution to the equation x²- 25x = 0 ?

• -25

• -5

• 5

• 25

• 125

The ratio of the side lengths for a triangle is exactly 9:12:15. In another triangle, which is similar to the first, the shortest side is 18 inches long. To the nearest hundredth of an inch, what is the length of the longest side of the other triangle?

• 18.25

• 24.00

• 25.50

• 30.00

• Cannot be determined from the given information

• 8

• 11

• 56

• 77

• 87

For the triangle APQR shown below, what is sin R ?

• 50

• 25

• 10

• 5

• 2

• 738

• 732

• 90

• 84

• 12

A circle in the standard (x,y) coordinate plane is tangent to the x-axis at 4 and tangent to the y-axis at 4. Which of the following is an equation of the circle?

• (x − 4)² + (y − 4)² = 16

• (x + 4)² + (y + 4)² = 16

• (x-4)² + (y − 4)² = 4

• x² + y² = 16

• x² + y² = 4

What expression must the center cell of the table below contain so that the sums of each row and each column are equivalent?

• 2x

• 3x

• 4x

• 5x

• 6x

At a plant, 160,000 tons of petrochemicals are required to produce 100,000 tons of plastic. How many tons of petrochemicals are required to produce 5,000 tons of plastic?

• 8,000

• 10,000

• 16,000

• 80,000

• 100,000