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kondor19780726 [428]
3 years ago
10

kim just went to the store and bought 2 presents that cost kim $1,800 and her Taxes or 88 cents how much does kimmlin have to pa

y?
Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0
3384 because .88 times 1800 is 1584 and you have to add that to 1800 making it 3384 (or the questions is really easy and its just 1800.88)
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anastassius [24]

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Step-by-step explanation:

We are given the following information in the question:

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x = \sqrt{2+t}\\\\y = 5 + \displaystyle\frac{1}{14}t

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\displaystyle\frac{dT}{dt} = \frac{dT}{dx}\frac{dx}{dt} + \frac{dT}{dy}\frac{dy}{dt}\\\\\displaystyle\frac{dT}{dt} = T_x(x,y)(\frac{1}{2\sqrt{2+t}}) + T_y(x,y)\frac{1}{14}\\\\At~ t = 14, x = 4, y = 6\\\\\frac{dT}{dt} = T_x(4,6)(\frac{1}{2\sqrt{2+t}}) + T_y(4,6)\frac{1}{14}\\\\\frac{dT}{dt} = 8\times \frac{1}{8} +4\times \frac{1}{14} = 1 + 0.2857 = 1.2857

Thus, the rate of change of temperature is 1.29 degree Celsius per second.

7 0
3 years ago
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