Rationalize the denominator. Assume variables represent non-negative values.
A. 128
B. 
C. 7
D. 
Answer: B
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For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (9t sin t + 9 cos t)i + (9t cos t - 9 sin t)j + 9k; normal plane at t = 5.5?.
A. y = 9 B. x - y + z = -9 C. x + y + z = -9 D. y = -9
Decide whether or not the network is traversable.
A. Not traversable B. Traversable
Multiply.11ax7(-6ax7 + 12x5)
A. -66a2x14 + 132x12 B. -66ax + 132x C. -66a2x14 + 132ax12 D. -66a2x14 + 12x5
Solve the problem.Consider an economy with only two industries: A and B. Suppose industry B needs 17 cents worth of A's product for each 1 dollar of output B produces and that industry A needs 24 cents worth of B's product for each 1 dollar of output A produces. Consumer demand for A's product is 1200 dollars and for B's product is 750 dollars. Write an augmented matrix for this economy.
A. 
B. 
C. 
D. 