Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.

A.
B.
C. All ordered pairs along  = 5
D. No solution


Answer: A

Mathematics

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Solve the problem.The decay of 502 mg of an isotope is given by  where A(t) is the amount remaining t years after the initial measurement. Find the amount left after 43 years. (Round to the nearest milligram.)

A. 287 mg B. 283 mg C. 144 mg D. 496 mg

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Provide an appropriate response.If C(x), the cost to produce x units of a product, is C(x) = 4x3 + 13x + 8 and the marginal cost function is C'(x), then find the rate of change of the marginal function with respect to x when x = 9.

What will be an ideal response?

Mathematics

Fill in the blank with one of the symbols =, <, or > to produce a true statement.-1 ? 19

A. = B. < C. >

Mathematics

Find the indicated vector.Let u = . Find -9u.

A.
B.
C.
D.

Mathematics