Solve. Give your answer as a mixed number if appropriate.
= 
A. 138
B. 2
C. 21
D. 28
Answer: C
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Plot the points with the given coordinates.A(4, 5), B(-2, -6)
What will be an ideal response?
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 + 18x + 32 = 0
A. (x - 9)2 + y2 = 49 center (9, 0), r = 7 B. (x + 9)2 + y2 = 49 center (-9, 0), r = 7 C. (x + 9)2 + y2 = 49 center (9, 0), r = 7 D. x2 + (y + 9)2 = 49 center (0, -9), r = 7
Add.(2 + 3n6 + 4n4) + (7n6 - 9n4 + 5)
A. 10n6 - 5n4 + 7 B. 10 - 5n6 + 7n4 C. 9n6 - 6n4 + 9 D. 12n10
Solve the problem.The loudness L of a sound of intensity I is defined as ?
where L = the loudness of the sound as measured in decibels and I0 = the minimum intensity detectable by the human ear. Find L for a sound whose intensity, I, is 105.4 I0.
A. 124.3 decibels B. 54 decibels C. 0.7 decibels D. 496.8 decibels