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2 years ago

PLEASE HELP

Mathematics

2 answers:

arsen [322]2 years ago

5 0

I think it is D. not sure tho

Umnica [9.8K]2 years ago

4 0

Just took the test. Yes, displacement is 45 meters, elapsed time is three seconds, and the direction is toward the goal.

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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

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

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3 years ago

What is the fractional form of 0.8

Sholpan [36]

Answer:

4/5

Step-by-step explanation:

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adelina 88 [10]

8 and 7 are both a factor of 56.

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2 years ago

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Please help this is Science.

monitta

C. velocity includes the direction of travel whereas speed does not.

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2 years ago

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What is a supplementary angle??

Olin [163]

A single angle is generally not considered to be supplementary. Supplementary angles are angles that equal 180° when they are added together. For example, 70° and 110° are supplementary because they equal 180°.

However, I guess the supplementary angle can be the angle that must be added to another to total 180°. For example, 80° is the supplementary angle of 100°.

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3 years ago

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