Find the LCM for the given numbers by an appropriate method.60, 40, and 70
A. 120
B. 420
C. 840
D. 280
Answer: C
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Factor completely. If unfactorable, indicate that the polynomial is prime.49 - (x + 4y)2
A. (7 + x + y)(7 - x - y) B. (7 + x + 4y)(7 - x - 4y) C. (7 + 4xy)(7 - 4xy) D. (7 + x - 4y)(7 - x - 4y)
Solve the equation by completing the square. Express any complex numbers using i notation.x2 + 4x = 7
A. x = -1 ± 
B. x = -2 ± 
C. x = 2 + 
D. x = -2 ± 2
Solve the problem.A wicker basket has a circular rim with a diameter of 11 in. How many inches of ribbon are needed to go once around the rim?(Use 3.14 for ? .)
A. 69.08 in. B. 32.54 in. C. 34.54 in. D. 121 in.
Solve the problem.A square box with an open top is to be constructed from a rectangular piece of cardboard with side length 17 inches by cutting out equal squares of side length x at each corner and then folding up the sides. Write a completely factored polynomial whose values give the surface area of the box.
A. 8x(8.5 + x) B. 4(8.5 - x)2 C. 8x(8.5 - x) D. 4(8.5 + x)2