Solve the problem.A rectangular piece of tin has an area of 1080 square inches. A square of 3 inches is cut from each corner, and an open box is made by turning up the ends and sides. If the volume of the box is 2106 cubic inches, what were the original dimensions of the piece of tin?
A. 24 in. by 45 in.
B. 27 in. by 48 in.
C. 18 in. by 36 in.
D. 21 in. by 42 in.
Answer: A
Mathematics
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Use identities to find the indicated value for each angle measure.tan ? = 
, sin ? < 0
Find cos(2?).
A. 
B. 
C. - 
D. - 
Mathematics
Solve the equation by completing the square.x2 + 8x + 12 = 0
A. {-2, -6}
B. {18, -6}
C. {2, 6}
D. {
, -1}
Mathematics
List all the elements of B that are elements of the given set.B = {17, 
, -13, 0, 
, 
, 
, 0.05} Rational numbers
A. 17, -13, 0, 
, 
, 0.05
B. 
, 
, 0.05
C. 17, 0, 
D. 
, 
Mathematics
Find the line of symmetry.f(x) = x2 - 16x + 64
A. x = 6 B. x = 8 C. x = -6 D. x = -8
Mathematics