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Effectus [21]
3 years ago
6

(Easy) Whoever is fastest gets brainless and extra points.

Mathematics
1 answer:
alekssr [168]3 years ago
6 0
5/15 = 0.33 cm3 …… that is the answer I think of you can answer mine that would be great
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The base of a solid in the region bounded by the two parabolas y2 = 8x and x2 = 8y. Cross sections of the solid perpendicular to
Usimov [2.4K]

The two curves intersect at two points, (0, 0) and (8, 8):

x^2=8y\implies y=\dfrac{x^2}8

y^2=\dfrac{x^4}{64}=8x\implies\dfrac{x^4}{64}-8x=0\implies\dfrac{x(x-8)(x^2+8x+64)}{64}=0

\implies x=0,x=8\implies y=0,y=8

The area of a semicircle with diameter d is \dfrac{\pi d^2}8. The diameter of each cross-section is determined by the vertical distance between the two curves for any given value of x between 0 and 8. Over this interval, y^2=8x\implies y=\sqrt{8x} and \sqrt{8x}>\dfrac{x^2}8, so the volume of this solid is given by the integral

\displaystyle\frac\pi8\int_0^8\left(\sqrt{8x}-\dfrac{x^2}8\right)^2\,\mathrm dx=\frac{288\pi}{35}

6 0
3 years ago
3/4 divided by 5/6? i need the answer for this mobymax thing if i dont gets it done, im screwed
Dovator [93]
I believe it’s 0.9, or 9/10.
8 0
3 years ago
WHAT AM I DOING WRONG?
hram777 [196]

Answer:

you are doing -4. so the first parenthesis -4(x+2x+1) is incorrect.

Step-by-step explanation:

Hope this helps plz hit the crown :D

6 0
3 years ago
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Should i do my teast for 12th grade calculus
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Answer:

attempt it, if it's too hard, sleep

that's what I would do lol

Step-by-step explanation:

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What is the ratio for 8 and 12
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It can be 8:12 or as a fraction it’s 8/12
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