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3 years ago

14

T=rs + s, for s solve

1 answer:

Greeley [361]3 years ago

5 0

It is t divided by r equals 2s

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maria [59]

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3 years ago

A light bulb consumes 960 watt-hours per day. How many watt-hours does it consume in 3 days and 18 hours?

oksano4ka [1.4K]

960 x 3 = 2880

18/24 = 0.75

960x 0.75 = 720

2880 + 720 = 3600

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3 years ago

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Setler [38]

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3 years ago

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Natalka [10]

Answer:

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Step-by-step explanation:

6 0

3 years ago

Solve the differential equation.<br><br> dx/dt = 1 - t + x - tx

dem82 [27]

$\displaystyle\frac{dx}{dt} = 1 - t + x - tx\ \Rightarrow\ \frac{dx}{dt} = 1(1- t) + x(1 - t) \ \Rightarrow \\ \\ 
\frac{dx}{dt} = (1+x)(1 - t) \ \Rightarrow\ \int \frac{dx}{1+x} = \int (1 - t)\ dt\ \Rightarrow \\ \\ \textstyle
\ln|1 + x| = t - \frac{1}{2}t^2 + C\ \Rightarrow\ |1 + x| = e^{t - t^2/2 + C }\ \Rightarrow \\ \\
1 + x = \pm e^{t - t^2/2} \cdot e^C\Rightarrow \\ \\ x = -1 + Ke^{t - t^2/2},\ \text{where $K$ is any nonzero constant.}$

8 0

4 years ago