Let zy = 3 and dz dt Find dy <= 5. dt when = 3. Question 3 Question Help: Video Submit Question 0/1 pt 397 Question Help: Video At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailin north at 20 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is speed of 1 nautical mile per hour.) Deta knots Let A be the area of a circle with radius r. If dr dt Question Help: Video Submit Question Question 5 Question Help: Video 2, find dollars per day dA dt when r = 2. 3². If sales are increasing A company's revenue from selling z units of an item is given as R = 2000x at the rate of 45 units per day, how rapidly is revenue increasing (in dollars per day) when 320 units have been sold? 0/1 pt 399 Details The altitude of a triangle is increasing at a rate of 2.5 centimeters/minute while the area of the triangle is increasing at a rate of 2.5 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 9 centimeters and the area is 87 square centimeters? Question Help: Video Submit Question cm/min Question 7 0/1 pt 399 Details Water is leaking out of an inverted conical tank at a rate of 12700 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 meters and the diameter at the top is 5 meters. If the water level is rising at a rate of 23 centimeters per minute when the height of the water is 4.5 meters, find the rate at which water is being pumped into the tank in cubic centimeters per minute. cm³ min