Prealgebra

The measures of the angles of a triangle are 50 degrees, 35 degrees, and 95 degrees. What is the measure of the largest exterior angle of the triangle?

• A. 85 degrees

• B. 130 degrees

• C. 145 degrees

• D. 150 degrees

Tags

CCSS.8.G.A.5

The area of the surface of the Atlantic Ocean is approximately 31,830,000 square miles. How is this area written in scientific notation?

• A. 3.183 x 10⁴

• B. 3.183 x 10⁵

• C. 3.183 x 10⁶

• D. 3.183 x 10⁷

Tags

CCSS.8.EE.A.3

Which statement is true about the equation below? 3(2 − 𝑘) = −3𝑘 + 2

• A. The equation has no solution.

• B. The equation has one solution.

• C. The equation has two solutions.

• D. The equation has infinitely many solutions.

Tags

CCSS.8.EE.C.7A

Which of the following numbers is not a rational number?

• A. -3

• B. 2.7

• C. √4

• D. √5

A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume 320π of cubic feet. What is the radius, in feet, of the water tank?

• A. 16 feet

• B. 10 feet

• C. 8 feet

• D. 4 feet

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

Which numbers are irrational? Select all that apply.

• A. √7

• B. 4π

• C. 3.2

• D. 0.45

• E. 0.245̅

Tags

CCSS.8.NS.A.1

Which numbers are between 4 and 5? Select all that apply.

• A. 3√2

• B. 2√𝜋

• C. 1/2 √68

• D. √17

• E. 2√7

Tags

CCSS.8.NS.A.2

Which set of numbers form a right triangle?

• A. 6.2, 7.3, 8.5

• B. 7, 24, 25

• C. 9, 12.5, 16.8

• D. 12, 34, 37

Tags

CCSS.8.G.B.8

What is the y-intercept of the graph of the following linear equation? 3x – 3 = y

• A. (0, 0)

• B. (1, 0)

• C. (0, -3)

• D. (-3, 0)

Find the slope of the line shown.

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.8.EE.B.5