Evaluate the polynomial.-2x2 - y2 + xy for x = -3 and y = 5
A. 28
B. -28
C. -58
D. -8
Answer: C
Mathematics
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Factor completely. If a polynomial is prime, then state this as your answer.x3(t3 - 343) + y3(t3 - 343)
A. (x + y)(x2 - xy + y2)(t + 343)(t2 - 1) B. (x + y)(x2 - xy + y2)(t - 7)(t2 + 7t + 49) C. (x + y)(x2 - xy + y2)(t + 7)(t2 - 7t + 49) D. (x + y)(x2 - xy + y2)(t - 7)(t2 + 49)
Mathematics
Find the probability.A family has five children. The probability of having a girl is 1/2. What is the probability of having no more than 3 boys?
A. 0.9688 B. 0.3125 C. 0.8125 D. 0.5000
Mathematics
Perform the indicated operation(s). Simplify if possible.
+ 
A. 
B. 
C. 
D. 3x + 8
Mathematics
Find the GCD or LCM as indicated.Given 240, 10,000, and 2250, find the GCD.
A. 50 B. 30 C. 10 D. 20
Mathematics