Write the augmented matrix for the system. 2x - 2y + 8z = 32 3x + 6y + 5z = 18 7x - 2y + 8z = 47
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use Newton's Law of Cooling to solve the problem.A dish of lasagna baked at 350°F is taken out of the oven into a kitchen that is 74°F. After 5 minutes, the temperature of the lasagna is 312.7°F. What will its temperature be 20 minutes after it was taken out of the oven? Round your answer to the nearest degree.
A. 235°F. B. 224°F. C. 218°F. D. 229°F.
Mathematics
Given that the pair of triangles are similar, find x.
A. x = 34 B. x = 28 C. x = 36 D. x = 45
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Mathematics
Factor the polynomial completely.- 12x3 + 9x2 + 4x4
A. (4x2 + 3)(x2 + 3) B. x2(4x - 1)(x - 9) C. x2(2x - 3)(2x - 3) D. x(2x + 3)(2x + 3)
Mathematics