Write the augmented matrix for the system. 7x + 9y = 30 3x + 5y = 14

A.
B.
C.
D.


Answer: C

Mathematics

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Find the values of x for which the geometric series converges.

A. |x| < 5
B. |x| < 1
C. |x| < 
D. |x| < 10

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Use a graphing calculator to display the solution of the given inequality or system of inequalities.y > -1 - xy < 5x - x3

A.

B.

C.

D.

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Evaluate.i24

A. i B. 1 C. -1 D. -i

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Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 5.2 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 

A. (A ? r)(t) = 27.04?2t B. (A ? r)(t) = 5.2?t2 C. (A ? r)(t) = 27.04?t2 D. (A ? r)(t) = 10.4?t2

Mathematics