Show by substitution whether the number r is a solution of the corresponding quadratic equation.x2 + 2x - 99 = 0; r = 9

A. Yes
B. No


Answer: A

Mathematics

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Solve.A cubical container measures 4 yd on each edge. What does it cost to fill the container at $2.02 per cubic yd?

A. $129.28 B. $24.24 C. $32.32 D. $130.57

Mathematics

Solve the problem. Round to the nearest cent.Central Airlines offers a series discount of 20/30/15 for frequent flyers. If a round-trip airline ticket is $741, what is the net cost after the series discount?

A. $388.28 B. $352.72 C. $259.35 D. $481.65

Mathematics

Use an inverse matrix to find the solution to the system.

A. x = 1, y = 5, z = 1 B. x = 8, y = -1, z = 5 C. x = 7, y = 1, z = 5 D. x = 7, y = -1, z = -5

Mathematics

Write an inequality to describe the situation.To have a chance of joining the basketball team, a player must have a height h of at least 75 inches.

A. h < 75 B. h ? 75 C. h ? 75 D. h > 75

Mathematics