Solve.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind of wire ?
A. 653 ohms
B. 657.5 ohms
C. 672 ohms
D. 660 ohms
Answer: D
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Find the domain and range of the function.F(t) = t2 - 7
A. D: [-49,?), R: [-7,?) B. D: (-?, ?), R: [-7,?) C. D: [0, ?), R: (-?, -7] D. D: (-?, ?), R: (-?, ?)
Form a valid conclusion, using all the statements for each argument. Give reasons. ? If 2 divides a positive integerNand ifNis greater than 2, thenNis not a prime number. N is not a prime number.
A. N is not greater than 2. B. N is an even number. C. 2 does not divide a positive integer N and N is not greater than 2. D. 2 does not divide a positive integer N or N is not greater than 2. E. none of these
Solve the system by using the inverse of the coefficient matrix. 2x1 - 4x2 = -2 3x1 + 4x2 = -23
A. (5, 2) B. (-2, 5) C. (-5, -2) D. (2, 5)
Use the graph to find the oblique asymptote, if any, of the function.
A. no oblique asymptote B. y = x C. y = -x D. y = 2x