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Natali5045456 [20]
3 years ago
15

How to solve parabola

Mathematics
2 answers:
Tomtit [17]3 years ago
7 0
I hate parabolas. i can't remember the equation. sorry.
jeyben [28]3 years ago
3 0

standard form: ax^2+bx+c

vertex form: a(x-h)^2+k

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Use the Shell Method to find the volume of the solid obtained by rotating region under the graph of f(x)=x^2+2 for 0≤x≤5 about x
Irina18 [472]

For each <em>x</em> in the interval 0 ≤ <em>x</em> ≤ 5, the shell at that point has

• radius = 5 - <em>x</em>, which is the distance from <em>x</em> to <em>x</em> = 5

• height = <em>x</em> ² + 2

• thickness = d<em>x</em>

and hence contributes a volume of 2<em>π</em> (5 - <em>x</em>) (<em>x</em> ² + 2) d<em>x</em>.

Taking infinitely many of these shells and summing their volumes (i.e. integrating) gives the volume of the region:

\displaystyle 2\pi \int_0^5 (5-x)(x^2+2)\,\mathrm dx=2\pi\int_0^5 (10-2x+5x^2-x^3)\,\mathrm dx=\boxed{\frac{925\pi}6}

4 0
2 years ago
What is the answer or question hurry it’s due tomorrow
Gala2k [10]
4,400 + 17,600 = 22,000.

4,400 / 22,000 = 0.2

0.2 = 20%

The answer is A.

Hope this helped☺☺
7 0
3 years ago
Read 2 more answers
The statement below is fallacious. Indicate which fallacy the speaker has committed:
sdas [7]

Answer:

Regression to the mean fallacy

Step-by-step explanation:

It assumes that something has returned to normal because of corrective actions taken while it was abnormal. This fails to account for natural fluctuations. It is frequently a special kind of the post hoc fallacy.

3 0
2 years ago
If two angles of a triangle have measures of 42° and 20°, what is the measure of the
iris [78.8K]

Answer:

118°

Step-by-step explanation:

the angle measures of a triangle will always add up to 180

so..

42+20=62

180-62=118

4 0
3 years ago
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Plz help pretty easy
cricket20 [7]

a and d b and c that's the answer

4 0
3 years ago
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