Choose the ordered pair which is a solution of the inequality.x + y > 0
A. (0, 0)
B. (1, -1)
C. (-1, 1)
D. (1, 0)
Answer: D
Mathematics
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A. - 
B. - 
C. - 
D. - 
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Use Euler's formula to answer the question.A polyhedron has 34 edges and 15 faces. How many vertices does it have?
A. 49 B. 21 C. 47 D. 18
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Find any x-intercepts.f(x) = -x2 + 2x + 8
A. none B. -8 C. -4 and 2 D. -2 and 4
Mathematics
Solve the problem using matrices.Melody has $45,000 to invest and wishes to receive an annual income of $4290 from this money. She has chosen investments that pay 5%, 8%, and 12% simple interest. Melody wants to have the amount invested at 12% to be double the amount invested at 8%. How much should she invest at each rate?
What will be an ideal response?
Mathematics