vonnieesser
Answered

Explore Westonci.ca, the leading Q&A site where experts provide accurate and helpful answers to all your questions. Get quick and reliable answers to your questions from a dedicated community of professionals on our platform. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

A river flowing southward has a current of 4 miles per hour. A motorboat in still water maintains a speed of 15 miles per hour. The motorboat starts at the west shore on a bearing of N ​40° E. What is the actual speed and direction of the​ boat

The actual speed of the boat is approximately
miles per hour

The actual bearing of the boat is north blank degrees east

Sagot :

StrawberryJeno7

Answer: x > 0, x = 12 miles per hour

Step-by-step explanation:Let x = speed of boat in still water

Speed upstream (against current) = x-4

Speed downstream (with current) = x+4

Distance = (Rate)(Time), so Time = Distance/Rate

Time upstream + Time downstream = 3

16/(x-4) + 16/(x+4) = 3

16(x+4) + 16(x-4) = 3(x+4)(x-4)

                   32x = 3(x2 - 16)

         3x2 - 32x - 48 = 0

        (3x + 4)(x - 12) = 0

          x = -4/3 or x = 12

Since x > 0, x = 12 miles per hour
Oh yeah lol lol is a good lol is
We hope this information was helpful. Feel free to return anytime for more answers to your questions and concerns. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.