Solve.If the voltage, V, in an electric circuit is held constant, the current, I, is inversely proportional to the resistance, R. If the current is 350 milliamperes when the resistance is 3 ohms, find the current when the resistance is 21 ohms.
A. 2443 milliamperes
B. 2450 milliamperes
C. 150 milliamperes
D. 50 milliamperes
Answer: D
Mathematics
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A. 99
B. 2145
C. 
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Determine the place value of the digit 3 in the whole number.6231
A. hundreds B. ones C. thousands D. tens
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An arithmetic sequence is given. Find the common difference and write out the first four terms.
A. d = 
; 
, 
, 
, 
B. d = 
; 
, 
, 
, 
C. d = 
; 
, 
, 
, 
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Solve the problem.The perimeter of a triangle is 45 cm. The triangle is isosceles now, but if its base were lengthened by 2 cm and each leg were shortened by 4 cm, it would be equilateral. Find the base of the original triangle.
A. 17 cm B. 13 cm C. 11 cm D. 10 cm
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