Evaluate the expression when x = 5, y = -2, and t = 8.x - y
A. 3
B. -3
C. -7
D. 7
Answer: D
Mathematics
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Write the vertex form of the equation of the parabola shown in the given graph. Assume a = ±1.
A. y = (x - 3)2 B. y = (x - 0)2 + 3 C. y = (x - 0)2 - 3 D. y = -(x - 0)2 - 3
Mathematics
Factor completely, or state that the polynomial is prime.y3 - 15y2 + 225y
A. prime B. y(y2 - 15y + 225) C. y(y + 15)2 D. y(y - 15)2
Mathematics
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics
Find a polar equation for the conic. A focus is at the pole.e = 3; directrix is perpendicular to the polar axis 2 to the right of the pole
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics