2 years ago

Hurry i need the answers quick!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

finlep [7]2 years ago

8 0

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Please need help, Will give brainiest!!!!

timurjin [86]

I'd say its D but im not quite sure, its what makes most sense to me.

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2 years ago

If F(x) and 1(x) are inverse functions of each other and f(x) = 2x+5, what is (8)?

evablogger [386]

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3 years ago

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Given the triangle below, which of the following equations correctly represents the relationship between a, b, and c?

maxonik [38]

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C. c^2=a^2+b^2-2abcos(90°)

Step-by-step explanation:

This is the law of cosine.

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2 years ago

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a spherical balloon is deflated at a rate of 256pi/3 cm^3/sec. at what rate is the radius of the balloon changing when the radiu

Hunter-Best [27]

What you need to look for is $\frac { dr }{ dt }$ when r=8.

Now:

$Volume\quad of\quad a\quad sphere:\\ \\ V=\frac { 4 }{ 3 } \pi { r }^{ 3 }$

$\therefore \quad \frac { dV }{ dr } =\frac { 4 }{ 3 } \pi \cdot 3{ r }^{ 2 }=4\pi { r }^{ 2 }\\ \\ \therefore \quad \frac { dr }{ dV } =\frac { 1 }{ \frac { dV }{ dr } } =\frac { 1 }{ 4\pi { r }^{ 2 } }$

$And:\\ \\ \frac { dV }{ dt } =-\frac { 256\pi }{ 3 } \\ \\ Therefore:\\ \\ \frac { dr }{ dt } =\frac { dr }{ dV } \cdot \frac { dV }{ dt }$

$\\ \\ =\frac { 1 }{ 4\pi { r }^{ 2 } } \cdot -\frac { 256\pi }{ 3 } \\ \\ =-\frac { 256 }{ 12 } \cdot \frac { \pi }{ \pi } \cdot \frac { 1 }{ { r }^{ 2 } }$

$\\ \\ =-\frac { 64 }{ 3{ r }^{ 2 } } \\ \\ When\quad r=8,\\ \\ \frac { dr }{ dt } =-\frac { 64 }{ 3\cdot { 8 }^{ 2 } } =-\frac { 1 }{ 3 } \\ \\ Answer:\quad -\frac { 1 }{ 3 } \quad cm/sec$

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3 years ago

Please help as soon as possible

eduard

Answer:

it's 96ft squared hope it helps

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2 years ago

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