A carpenter charges $630 for 14 hours of work. She charges the same
1 answer:
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Answer:
Rate of change of the area of the rectangle at that instant = 7 cm²/hr.
Step-by-step explanation:
Area of rectangle = Height x Width
A = hw
The height of a rectangle is increasing at a rate of 3 centimeters per hour and the width of the rectangle is decreasing at a rate of 4 centimeters per hour.
Differentiating area with respect to time,
We need to find rate of change of area when the height is 5 centimeters and the width is 9 centimeters.
Rate of change of the area of the rectangle at that instant = 7 cm²/hr.
Y=2000*
2200=2000*
<span>
so,
y at t=8 is 2000*(</span><span>
)^8
y = 2000(22/20)^2=2000*1.21=</span><span>2420 thats the answer i hope.</span>
2200=2000*
so,
y at t=8 is 2000*(</span><span>
y = 2000(22/20)^2=2000*1.21=</span><span>2420 thats the answer i hope.</span>