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Korvikt [17]
4 years ago
12

PLZ HELP A 18,000 gallon swimming pool contains 7,000 gallons of water of water when a hose is placed in the pool and begins add

ing water a 1100 per hour
Mathematics
1 answer:
Alex73 [517]4 years ago
6 0
I don't understand what the actual question is. Is it how long would it take?

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Use a surface integral to find the general formula for the surface area of a cone with height latex: h and base radius latex: a(
BlackZzzverrR [31]
We can parameterize this part of a cone by

\mathbf s(u,v)=\left\langle u\cos v,u\sin v,\dfrac hau\right\rangle

with 0\le u\le a and 0\le v\le2\pi. Then

\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|\,\mathrm du\,\mathrm dv=\sqrt{1+\dfrac{h^2}{a^2}}u\,\mathrm du\,\mathrm dv

The area of this surface (call it \mathcal S) is then

\displaystyle\iint_{\mathcal S}\mathrm dS=\sqrt{1+\frac{h^2}{a^2}}\int_{v=0}^{v=2\pi}\int_{u=0}^{u=a}u\,\mathrm du\,\mathrm dv=a^2\sqrt{1+\frac{h^2}{a^2}}\pi=a\sqrt{a^2+h^2}\pi
6 0
3 years ago
SHORT & EASY !!!!!!!!!!!
Tresset [83]

Answer:

Exact Form:

x = 9/2

Decimal Form:

x = 4.5

Mixed Number Form:

x = 4 1/2

7 0
3 years ago
Read 2 more answers
How can I solve and start ?
dsp73
Ok so u have to set them equal to 180 bc they r supp lines so 1.15+x=180 sub 15 from both sides x=165
2.28+x-4=180 combine like terms 28-4=24 rewrite 24+x=180 den sub 24 from both sides x=156
I will put the rest in the comments if you still don't know
6 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is 10x + 6у –84. Fully simplify your answer.​
mixer [17]

Answer:

The slope is 3/5.

Step-by-step explanation:

I am assuming you mean

10x + 6y = 84

6y = -10x + 84

y = -5/3 x + 14.

So the slope of this line is -5/3 and the slope of a line perpendicular to it is

-1 / -5/3 = 3/5.

5 0
3 years ago
Can u guys answer these last 4 questions for me w/ work shown and also label the ones u guys did so I won’t get them mixed up
bagirrra123 [75]

Answer:

it's simple substitution

Step-by-step explanation:

1. (7)(2)/2= 14/2=7

2. (5)-(8)/4=

3. (6)-(1)+6=11

4. (19)+(1)^3=21

4 0
3 years ago
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