Identify the equation without completing the square.2x2 + 3y2 + 6x + 2 = 0
A. parabola
B. hyperbola
C. ellipse
D. not a conic
Answer: C
Mathematics
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Solve the problem.A measure of diversity of species in an ecological community is given by the formula 
where P1, P2, ... ,Pn are the proportions of a sample belonging to each of n species found in the sample. A sample of a community shows three species with 48 individuals each. Find the index of diversity H.
A. 1 B. 0.53 C. 2.1 D. 1.6
Mathematics
Find a simplified form of the difference quotient for the function.f(x) = ax3 + bx
A. a(3x2 + 3xh + h2) + h B. 3ax2 + 3axh + h2 + b C. a(2x2 + 3x2 + 3xh + h2) + h D. a(3x2 + 3xh + h2) + b
Mathematics
Graph the linear equation.y = -3x - 1
A. 
B. 
C. 
D. 
Mathematics
For the proportion, find the unknown number n.
= 
A. 4
B. 5
C. 
D. 4
Mathematics