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Black_prince [1.1K]
3 years ago
10

What does X equal??????????

Mathematics
1 answer:
tatuchka [14]3 years ago
8 0

idk but I think its 30?

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A driver averages 42 miles per hour and took 15 hours to travel between two cities what is the distance between the two cities
pishuonlain [190]

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The distence bettween the two cities is 630miles

Step-by-step explanation:

So you take 42 and multiply it by 15 and you get 630.

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41 is 163 added to y
fomenos

Answer:

y + 163 = 41

Step-by-step explanation:

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2 years ago
The dimensions for the rectangular kitchen table top are shown below.What is the area of the kitchen table top.
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Read 2 more answers
Find y'' by implicit differentiation. 3x^3 + 4y^3 = 5
pochemuha
We first have to find the first derivative before we can find the second.  First derivative with respect to x is 9x^2+12y^2 \frac{dy}{dx}=0 so 12y^2 \frac{dy}{dx}=-9x^2  and  \frac{dy}{dx}=- \frac{9x^2}{12y^2}=- \frac{3x^2}{4y^2}.  That's the first derivative.  Now for the second it's probably easiest to use the quotient rule, even though it's usually long and drawn out.  That looks like this: \frac{dy}{dx}= \frac{4y^2(-6x)-[-3x^2(8y \frac{dy}{dx})] }{(4y^2)^2}  which simplifies a bit to  \frac{dy}{dx}= \frac{-24xy^2+24x^2y( \frac{dy}{dx}) }{16y^4}.  We will multiply both sides by that denominator to get rid of it which leaves us with  16y^4 \frac{dy}{dx}=-24xy^2+24x^2y \frac{dy}{dx}.  Get both dy/dx terms on the same side, and then factor it out.  \frac{dy}{dx}(16y^4-24x^2y)=-24xy^2.  Divide to isolate the dy/dx: \frac{d^2y}{dx^2}= \frac{-24xy^2}{16y^4-24x^2y}.  There's no simplifying you could do after that that would make any significant difference.
6 0
3 years ago
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