Solve the problem.Suppose you would like to cross a 222-foot wide river in a boat. Assume that the boat can travel 33 mph relative to the water and that the current is flowing west at the rate of 7 mph. If the bearing is chosen so that the boat will land at a point exactly across from its starting point, how long will it take for the boat to make the crossing? Give your answer to the nearest second.
A. 2 sec
B. 9 sec
C. 19 sec
D. 5 sec
Answer: D
Mathematics
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Find the local extrema of the function, if they exist.f(x) = 3x2 + 6x + 1
A. Local minimum at (-1, -2) B. Local maximum at (1, 2) C. Local minimum at (2, 1) D. Local minimum at (-2, -1)
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Provide an appropriate response.While solving an equation, why can't you multiply both sides of the equation by zero?
What will be an ideal response?
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Classify the system as independent, inconsistent, or dependent.2x - y = 4 x + 3y = 2
A. Inconsistent B. Dependent C. Independent
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Determine whether the matrix is in echelon form, reduced echelon form, or neither.
A. Neither B. Echelon form C. Reduced echelon form
Mathematics