An airliner passes over an airport at noon traveling 500 mi / hr due east. At 1:00 p.m., another airliner passes over the same airport at the same elevation traveling due north at 580 mi / hr. Assuming both airliners maintain their (equal) elevations, how fast is the distance between them changing at 3:00 p.m.? The equation relating the horizontal distance between the first airliner and the airport, a, the horizontal distance between the second airliner and the airport, b, and the horizontal distance between the two airliners, c is Differentiate both sides of the equation with respect to t. dc dt (Do not simplify.) At 3:00 p.m., the distance between the airliners is changing at a rate of about (Round to the nearest tenth as needed.)
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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