Perform the operation. Write the answer as a fraction in lowest terms.2 ÷ 5

A.
B.
C.
D.


Answer: A

Mathematics

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Solve the system by the substitution method.x - 2y = 3x2 - xy = 20

A. {(-5, -1), (, 8)}
B. {(5, 1), (- , -8)}
C. {(5, 1), (-8, - )}
D. {(-5, -1), (8, )}

Mathematics

Solve the problem.A sample of 1000 g of lead-210 decays to polonium-210 according to the function given by  where t is time in years. What is the amount of the sample after 70 years? Round the answer to the nearest gram.

A. 29 g B. 77 g C. 106 g D. 9393 g

Mathematics

Graph the inequality.y ? 

A.

B.

C.

D.

Mathematics

Solve the equation by completing the square.7x2 + 20x = -14

A.
B.
C.
D.

Mathematics