Express the number in scientific notation.3,100,000
A. 3.1 × 10-6
B. 3.1 × 10-7
C. 3.1 × 107
D. 3.1 × 106
Answer: D
Mathematics
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Solve the differential equation.ex
+ 2ex y = 1, x > 0
A. y = e-x + e-2x, x > 0 B. y = e-x + Ce-2x, x > 0 C. y = e-2x + Ce-x, x > 0 D. y = ex + Ce-2x, x > 0
Mathematics
Write as a percent.0.5
A. 50% B. 500% C. 0.5% D. 0.05%
Mathematics
Solve the system of equations using Cramer's Rule, if applicable.
A. {(x, y)| 5x - 3y = 6}
B. ?
C. 
D. (3, 4)
Mathematics
Solve the problem.If a graph is symmetric with respect to the origin and it contains the point (-4, 7), which of the following points is also on the graph?
A. (4, 7) B. (-4, -7) C. (7, -4) D. (4, -7)
Mathematics