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Marysya12 [62]
3 years ago
9

Help me ASAP please

Mathematics
2 answers:
Crazy boy [7]3 years ago
4 0

no te entendi ni verga no ablo inglés

Julli [10]3 years ago
4 0

Answer:

C. 314

Step-by-step explanation:

V=3.14r^2h=3.14(5^{2})(4)=314.15

<em>good luck, hope this helps :)</em>

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Given the function f(x)=2x+5 and g(x)=x-7, solve for f(g(x)) when x=-3
Montano1993 [528]
The answer is -15. because 2(-3-7)+5=-15.
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3 years ago
Two similar triangles, the perimeter of the first is 74cm and the side lengths of the other one are 4.5cm 6cm and 8 cm. Find the
musickatia [10]

Answer:

the longest side of the first triangle is 32 cm

Step-by-step explanation:

Given;

dimension of the smaller triangle =  4.5cm 6cm and 8 cm.

the longest side of this smaller triangle = 8 cm

Perimeter of the first triangle = 74 cm

let the increase in dimension of the similar first triangle = x

the longest side of the first triangle = 8x

4.5x + 6x + 8x = 74

18.5x = 74

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3 years ago
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sergiy2304 [10]

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Radical Rational Exponents and with work. PLZ
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Let divf = 6(5 − x) and 0 ≤ a, b, c ≤ 12. (a) find the flux of f out of the rectangular solid 0 ≤ x ≤ a, 0 ≤ y ≤ b, and 0 ≤ z ≤
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Continuing from the setup in the question linked above (and using the same symbols/variables), we have

\displaystyle\iint_{\mathcal S}\mathbf f\cdot\mathrm d\mathbf S=\iiint_{\mathcal R}(\nabla\cdot f)\,\mathrm dV
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The next part of the question asks to maximize this result - our target function which we'll call g(a,b,c)=3abc(10-a) - subject to 0\le a,b,c\le12.

We can see that g is quadratic in a, so let's complete the square.

g(a,b,c)=-3bc(a^2-10a+25-25)=3bc(25-(a-5)^2)

Since b,c are non-negative, it stands to reason that the total product will be maximized if a-5 vanishes because 25-(a-5)^2 is a parabola with its vertex (a maximum) at (5, 25). Setting a=5, it's clear that the maximum of g will then be attained when b,c are largest, so the largest flux will be attained at (a,b,c)=(5,12,12), which gives a flux of 10,800.
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3 years ago
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