Simplify the expression.
?
?
A. 2
B. 4
C. 6
D. 3
E. none of these
Answer: A
Mathematics
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Evaluate the expression.61
A. 
B. 6
C. 1
D. -6
Mathematics
Provide an appropriate response.Solve the system of quadratic equations: y = x2 - 8y = -x2
A. (-2, -4) B. (2, -4) C. both A and B D. no solution
Mathematics
Find the number of terms in the sequence or the sum of the sequence as requested.Find the following sum: 4 + 10 + 16 + . . . + 112
A. 1102 B. 1110 C. 1106 D. 1094
Mathematics
Solve the problem.A bridge is built in the shape of a parabolic arch. The bridge arch has a span of 184 feet and a maximum height of 40 feet. Find the height of the arch at 15 feet from its center.
A. 38.9 ft B. 4.3 ft C. 0.3 ft D. 12.9 ft
Mathematics