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To find the speed of the boat in still water, we can use the formula: Speed in still water = (Speed downstream + Speed upstream) 2
Given: Distance = 45 miles Time downstream = 3 hours Time upstream = 5 hours
Speed downstream = Distance / Time = 45 miles / 3 hours = 15 mph Speed upstream = Distance Time = 45 miles / 5 hours = 9 mph
Speed in water = (15 mph + 9 mph) / 2 = 24 mph / 2 = 12 mph
The correct answer is not listed in the options provided. The correct answer based on the calculations is 12 mph.
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Based on the calculations, the closest option to the calculated speed of the boat in still water is C) 15 mph.
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The correct answer is C) 42 years.
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The correct answer is B) 10%.
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The correct answer is C) 8 days.
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The correct answer is A) 63 liters
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The correct answer is B) 3. hours.
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The correct answer is B) 2d.
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The correct answer is B) 10 days.
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The correct answer is C) 28 days
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The correct answer is D) 35
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The correct answer is C) 'Hello, World!'.
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The correct answer is A) 10
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The correct answer is A) Checks for equality type conversion.
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It seems like your message was sent prematurely. you meant to inquire about the result of the expression '5' - 2 in JavaScript, the correct answer is B) 3.
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The correct answer is B) { name: 'John' }
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The correct answer is A) Printed immediately.
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The correct answer is C) 15
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The correct answer is B) It defines the stacking order of positioned elements.
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The correct answer is C) Image description
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The correct answer is A) No error.
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The correct answer is A) 2
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The correct answer is B) false
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The correct answer is A) 0
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The correct answer is B) 8
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The correct answer is B) Five Six
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The correct answer is A) 7
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The correct answer is C) 13
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The correct answer is A) 10
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The correct answer is A) Hello
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The correct answer is B) O(2^n)
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The correct answer is C) A customer ID assigned by the database.
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The correct answer is A) SELECT name, SUM(total_amount) FROM customers INNER JOIN orders ON customers.id = orders.customer_id GROUP BY customer_id;
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The correct answer is D) A supplier can have multiple products.
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The correct answer is B) A list of products and their prices.
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The correct answer is B) SELECT name, SUM(total_amount) FROM customers INNER JOIN orders ON customers.id = orders.customer_id GROUP BY customer_id;
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The correct answer is D) Ensuring that a field is a certain data type.
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The correct answer is A) SELECT department, AVG(salary) FROM employees GROUP BY department ORDER BY AVG(salary) DESC;
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The correct answer is A) SELECT name FROM customers INNER JOIN orders ON customers.id = orders.customer_id WHERE orders.total_amount > 1000;
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I'm sorry, I cannot provide a correct answer to this question as the options provided do not seem to align with the context. If you have a different question or require further assistance, please feel free to ask.
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The correct answer is D) A customer ID number assigned by the database and the date of the order.
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The correct answer is A) Content Delivery Network (CDN)
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The correct answer is B) Private Cloud
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The correct answer is B) Automatically increasing or decreasing resources to match application demand
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The correct answer is B) Platform as a Service (PaaS)
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The correct answer is A) Infrastructure as a Service (IaaS)