Solve the equation.-7(9 + x) = -21

A. {-30}
B. {-12}
C. {-6}
D. {12}


Answer: C

Mathematics

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80,172 ð 102 ÄÄÄÄÄÄÄÄÄÄÄÄ 1.29

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List all equally likely outcomes in the sample space for the indicated experiment.A box contains 2 blue cards numbered 1 through 2, and 3 green cards numbered 1 through 3. List the sample space of picking a blue card followed by a green card.

A. {(1, 2, 3)} B. {(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3)} C. {(2, 3)} D. {(1,1), (1,2), (2, 1), (2, 2), (3, 1), (3, 2)}

Mathematics

In the rhombus PQRS, SQ is an altitude and ST ? SP. Prove that TQRS is an isosceles trapezoid.

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Solve.The distance between two cities is 611 kilometers. Convert this to miles. Round answer to the nearest hundredth, if necessary.

A. 665.99 mi B. 183.3 mi C. 983.71 mi D. 378.82 mi

Mathematics