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