Solve.The temperature at 5:00 was -4°C. Four hours later, it was -12°C. What was the change in temperature?

A. -16°C
B. 16°C
C. 8°C
D. -8°C


Answer: D

Mathematics

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Find the absolute maxima and minima of the function on the given domain.  on the disk bounded by the circle  

A. Absolute maximum: 72 at    and    absolute minimum: 54 at    and  
B. Absolute maximum: 126 at    absolute minimum: 0 at  
C. Absolute maximum: 72 at    and    absolute minimum: 0 at  
D. Absolute maximum: 54 at    and    absolute minimum: 0 at  

Mathematics

Solve the system of equations by the substitution method. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent or dependent.5x + 6y = 12 3x + 2y = 4

A. (0, 3) B. No solution; inconsistent C. (0, 2) D. (-1, 3)

Mathematics

The helix (t)=4 costi+sintj+tk intersects the curve (t) = (4+t)i+6t²j+5t³k at the point (4, 0, 0). Find the angle of intersection.

Mathematics

Divide and check your answer.

A. 578 B. 579 C. 578 R1 D. 578 R8

Mathematics