4 years ago

D^2y/dx^2+4dy/dx-12y=cos2x

1 answer:

3 0

If you're solving for x, you'd move all the terms containing x to the left side of the equation:

d^2y/dx^2+4y/x-12y-cos^2(x)+sin^2(x)=0

If you're solving for y, you'd simplify both sides of the equation, then isolating the variable:

y=xcos(2x)

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Need help with b, picture attached.

Vikki [24]

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3 years ago

In a chemistry class, 12 L of a 12% alcohol solution must be mixed with a 20% solution to get a 14% solution. How many liters of

tigry1 [53]

Let x = liters 20% solution to be added
then

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Hope this helped!!

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3 years ago

Answer to question first

andrey2020 [161]

Answer:

C. But be careful. It depends if you have been told what I was having trouble with.

Step-by-step explanation:

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So the interest would look like (1 + 0.022/4)*principle. Whoever made the question has to make clear what is going on. My guess is the intended answer is C.

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An amusement park offers ride tickets for $1.50 each to customers who buy the quantities of tickets indicated in the picture of

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