Use factoring techniques to solve the quadratic equation.x2 + 8x + 7 = 0

A. {1, - 7}
B. {1, 7}
C. {7, 0}
D. {- 1, - 7}


Answer: D

Mathematics

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A. 9? B. 16? C. 17? D. 8?

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Use Gauss's Divergence Theorem to calculate .F(x, y, z) = cos z2i + exj + 7zk, S is the cube -1 ? x ? 1, -1 ? y ? 1, -1 ? z ? 1.

A. 28 B. 7 C. 56 D. 14

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Solve the problem.A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents time in years and y represents the amount of the isotope left then the equation for the situation is  In how many years will there be 90% of the isotope left?

A. 527 yr B. 246 yr C. 1000 yr D. 500 yr

Mathematics

Solve the problem.Assume that G is a graph with 10 vertices. It is known that one vertex has degree 9 and the other vertices each have degree 1. What can be said about G?

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Mathematics