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3 years ago

What is 4 to the 3rd power

2 answers:

7 0

4 to the 3rd power= 4*4*4=64 when ever you have a number to a power just multiply that number by itself that many times, like 7 to the 8th power 7*7*7*7*7*7*7*7=5764801

lisabon 2012 [21]3 years ago

4 0

4 x 4 x 4 = 64 is the answer

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The general solution of 2 y ln(x)y' = (y^2 + 4)/x is

Sav [38]

Replace $y'$ with $\dfrac{\mathrm dy}{\mathrm dx}$ to see that this ODE is separable:

$2y\ln x\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2+4}x\implies\dfrac{2y}{y^2+4}\,\mathrm dy=\dfrac{\mathrm dx}{x\ln x}$

Integrate both sides; on the left, set $u=y^2+4$ so that $\mathrm du=2y\,\mathrm dy$ ; on the right, set $v=\ln x$ so that $\mathrm dv=\dfrac{\mathrm dx}x$ . Then

$\displaystyle\int\frac{2y}{y^2+4}\,\mathrm dy=\int\dfrac{\mathrm dx}{x\ln x}\iff\int\frac{\mathrm du}u=\int\dfrac{\mathrm dv}v$

$\implies\ln|u|=\ln|v|+C$

$\implies\ln(y^2+4)=\ln|\ln x|+C$

$\implies y^2+4=e^{\ln|\ln x|+C}$

$\implies y^2=C|\ln x|-4$

$\implies y=\pm\sqrt{C|\ln x|-4}$

4 0

2 years ago

What is 3/14 divided by 1/2 (Reduce to lowest terms!)

cricket20 [7]

The answer to that question is 3/7

7 0

3 years ago

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A recipe needs tablespoon salt<br> This same recipe is made 5 times.<br> How much total is needed?

Andre45 [30]

Answer: c) 1 1/4

Step-by-step explanation: you do 1/4 times 5 .You make 5 a fraction which is 5/1.So now you do 1/4 times 5/1 which is 5/4.And you change it to a mixed number which is 1 1/4.

8 0

3 years ago

Please solve (8th grade pre-algebra)

tigry1 [53]

The answer is: Hint

You welcome buddy

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3 years ago

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If there are 7 bolts in a widget and 6 widgets in an appliance, how many bolts are in 20 appliances?

sweet [91]

A single appliance has 6 widgets, and a widget has 7 bolts. Therefore, you need to multiply 6 by 7 to find the number of bolts in a single appliance.

6 x 7 = 42

Now that you know the number of bolts in an appliance, you can find the number of bolts in 20 appliances by multiplying 42 by 20.

42 x 20 = 840

Hence, there are 840 bolts in 20 appliances.

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3 years ago