Solve the equation by factoring.x2 = x + 72
A. {-8, -9}
B. {1, 72}
C. {-8, 9}
D. {8, 9}
Answer: C
Mathematics
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Solve the problem.Use series to estimate the integral's value to within an error of magnitude less than 10-3.
A. 0.6007 B. 1.411 C. 0.6223 D. 0.3257
Mathematics
Solve the problem.If a fair coin is tossed twice, the probability that at least one of the tosses will come up heads is
A. 
.
B. 
.
C. 
.
D. 
.
E. none of these
Mathematics
Find the exact value of y, or state that y is undefined.y = cos-1
A. 
B. 
C. 
D. 
Mathematics
Find the directrices of the hyperbola. 
- 
= 1
A. y = -6 ± 
B. y = -6 ± 
C. y = ± 
D. x = 7 ± 
Mathematics