Factor the trinomial completely.-2x2 - 6x + 80
A. 2(x - 5)(x + 8)
B. -2(x + 5)(x + 8)
C. -2(x - 5)(x + 8)
D. -2(x + 5)(x - 8)
Answer: C
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Find the equation for the given conic in the x'y'-coordinates when the coordinate axes are rotated through an angle ?.5x2 - 6xy + 5y2 - 8 = 0; ? = 45°
A. x'2 + 4y'2 = 1
B. 
+ y'2 = 1
C. 
+ 2y'2 = 1
D. 
+ 
= 1
Convert to an exponential equation.log10100 = 2
A. 210 = 100 B. 10010 = 2 C. 1002 = 10 D. 102 = 100
Provide an appropriate response.A data set consists of the month of birth for 500 different people. Is it possible to calculate the average for this data set? Is it possible to find the median or the mode? Explain your answer.
What will be an ideal response?
Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 5x
B. 
C. 
D. 