Solve.A boat can go 105 miles per hour in still water. It takes as long to go 630 miles upstream as it does to go downstream 720 miles. How fast is the current?
A. 9 mph
B. 6 mph
C. 1 mph
D. 7 mph
Answer: D
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Provide an appropriate response.The graph of y = (x10)x has two horizontal tangent lines. Find equations for both of them.
A. y = e1/e and y = e-1/e B. y = e10e and y = e-10e C. y = e5/e and y = e-5/e D. y = e10/e and y = e-10/e
Answer the question. You will need to use the formula 4.9t2 + vot = s.Approximately how far will an object fall in 1 seconds when thrown downward at an initial velocity of 20 meters per second from a plane?
A. 33.3 meters B. 21.3 meters C. 35.1 meters D. 24.9 meters
Find the vertices of the ellipse.25x2 + y2 - 450x + 2000 = 0
A. (9, 2
), (9, -2
)
B. (5, 9), (5, -9)
C. (5, 4
), (5, -2
)
D. (9, 5), (9, -5)
Solve the problem.Management at a factory has found that the maximum number of units a worker can produce in a week is given by P(t) = 56 (1 - e- 0.2t), where t is the number of weeks the worker has been on the job. How many units can a worker produce in a week after being on the job for 8 weeks?
A. 8 units B. 45 units C. 67 units D. 10 units