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kotegsom [21]
3 years ago
12

If log, 7 -3 what is the value of x? A. 21 B. 3V7 C. 37 D. 343

Mathematics
1 answer:
gregori [183]3 years ago
4 0

Answer:

B

Step-by-step explanation:

logₓ 7 = 3

x³ = 7

Take cube root both sides

x= \sqrt[3]{7}

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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}

Integrate both sides.

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

On the right side, integrate by parts.

(t+5) x(t) = \dfrac15 (5t+24) e^{5t} + C

Solve for x(t).

\boxed{x(t) = \dfrac{5t+24}{5t+25} e^{5t} + \dfrac C{t+5}}

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2 years ago
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Eva8 [605]
The answer is 562.43
7 0
3 years ago
Evaluate X + Y when X = 13.1 and Y = 2.2<br> A. 10.9<br> B. -10.9<br> C. 35.1<br> D. 15.3
bazaltina [42]
<span>X +Y = 13.1 +  2.2
= 15.3

answer
</span><span>D. 15.3</span>
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4 years ago
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Lelu [443]

Answer:

B?

Step-by-step explanation:

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Three times the difference of a number and 2
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Answer:

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Step-by-step explanation:

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