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myrzilka [38]
3 years ago
15

Evaluate the following expression: 5+7(3x+y) when x=12, y=8

Mathematics
2 answers:
Mice21 [21]3 years ago
7 0

Answer:

The answer is 313.

Step-by-step explanation:

You have to substitite the values of x and y into the expressions :

5 + 7(3x + y)

let \: x = 12,y = 8

5 + 7(3 \times 12 + 8)

= 5 + 7(36 + 8)

= 5 + 7(44)

= 5 + 308

= 313

timofeeve [1]3 years ago
5 0
First step is 5+7(36x+8y) because you have to distribute
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Step-by-step explanation:

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2 years ago
Any help with this greatly appreciated.
Anestetic [448]

Put the equation in standard linear form.

x'(t) + \dfrac{x(t)}{t + 5} = 5e^{5t}

Find the integrating factor.

\mu = \exp\left(\displaystyle \int \frac{dt}{t+5}\right) = e^{\ln|t+5|} = t+5

Multiply both sides by \mu.

(t+5) x'(t) + x(t) = 5(t+5)e^{5t}

Now the left side the derivative of a product,

\bigg((t+5) x(t)\bigg)' = 5(t+5)e^{5t}

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(t+5) x(t) = \displaystyle 5 \int (t+5) e^{5t} \, dt

On the right side, integrate by parts.

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2 years ago
What is the equation of this graphed line ?
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Answer:

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