Solve the application.At 5 AM, the outside temperature was -6.4°C. By 7 AM, the temperature had risen 3.65°C. What was the temperature at 7 AM?
A. -2.75°C
B. -10.05°C
C. 23.36°C
D. 10.05°C
Answer: A
Mathematics
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Evaluate the integral.
A. 
B. - 
C. 
D. - 
Mathematics
Solve the problem.Find the x and y values so that the voltages V1 = 10 + (y + 2)j and V2 = (x + 9) + 10j are equal.
A. x = 8 and y = 1 B. x = -1 and y = -8 C. x = 1 and y = -8 D. x = 1 and y = 8
Mathematics
Solve the problem.A square plywood platform has a perimeter which is 10 times the length of a side, decreased by 24. Find the length of a side. 
A. 4 B. 1 C. 10 D. 6
Mathematics
Determine the vertex, focus, and directrix of the parabola and sketch its graph.x2 - 12x = 8y - 68
A. vertex: (6, 4)
focus: (6, 2)
directrix: y = 6
B. vertex: (6, 4)
focus: (4, 4)
directrix: x = 8
C. vertex: (6, 4)
focus: (6, 6)
directrix: y = 2
D. vertex: (6, 4)
focus: (8, 4)
directrix: x = 4
Mathematics