Use the substitution method to solve the system.x - 7y = 50-4x - 8y = 16

A. (-8, -5)
B. (7, -5)
C. (8, -6)
D. No solution

Answer: C

Mathematics

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Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 13 grams, how much will remain after 98 years? ? Please enter your answer as a number without the units, rounded to four decimal places.

Fill in the blank(s) with the appropriate word(s).

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Simplify.

A.
B.
C.
D.

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Perform the matrix multiplication.Let A =  and B = . Find AB.

What will be an ideal response?

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Find f such that the given conditions are satisfied.f'(x) = 5x2 - 7x + 4, f(0) = 2

A. f(x) = x3 - x2 + 4x + 2
B. f(x) = x3 + x2 + 4x + 2
C. f(x) = x3 - x2 + 4x - 4
D. f(x) = x3 - x2 + 4x - 2

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Mathematics