Solve the problem.The temperature at 5:00 was -7°C. Four hours later, it was -11°C. What was the change in temperature?
A. -18°C
B. 4°C
C. -4°C
D. 18°C
Answer: C
Mathematics
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Solve the problem.Consider the area of the region in the first quadrant enclosed by the curve y = 
cosh 8x, the coordinate axes, and the line x = 10. This area is the same as the area of a rectangle of a length s, where s is the length of the curve from 
to 
What is the height of the rectangle?
A. 
B. 8
C. sinh 80
D. 
sinh 80
Mathematics
Evaluate.(-4)3
A. -64 B. 64 C. 12 D. -12
Mathematics
Eliminate the parameter to obtain a Cartesian equation of the curve.x = 2t, y = t + 5, -2 ? t ? 3
A. y = 
x - 5, -? < x < ?
B. y = x2 + 1, -2 ? x ? 2
C. y = 
x + 5, -4 ? x ? 6
D. y = -2x + 5, -? < x < ?
Mathematics
Provide an appropriate response.Can non-square matrices have inverses? Why or why not?
What will be an ideal response?
Mathematics