Simplify. 63 ÷ 12 - 9
A. 8
B. 9
C. 213
D. 72
Answer: B
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Solve.The electrical resistance of a given length of wire is inversely proportional to the square of the diameter of the wire: 
= 
.If a certain length of wire with a diameter of 41.759 mils has a resistance of 8.475 ohms, what is the resistance of the same length of the same composition wire with a diameter of 30.979 mils?
A. 11.285 ohms B. 7.855 ohms C. 15.399 ohms D. 16.407 ohms
Determine whether the following is a proportion.
= 
A. Yes B. No
What is the amplitude of the graph of y= -3sin?x?
What will be an ideal response?
For ?ABC with side lengths 2.5 feet, 2 feet and 3 feet:
(a) ?A = 41.4°,?B = 55.8°,?C = 82.6° (a) ?A = 82.6°,?B = 41.4°,?C = 55.8° (a) ?A = 55.8°,?B = 41.4°,?C = 82.6° (a) ?A = 56°°,?B = 44°,?C = 90°