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3 years ago

K divided 3=9 Help me

Mathematics

2 answers:

Sonja [21]3 years ago

7 0

Answer: 3

Step-by-step explanation: common sense

Anastaziya [24]3 years ago

5 0

Answer:

Step-by-step explanation:

If k/3 = 9

K must be 27

because 9*3=27

and to check we can do

27/3

and 27/3 = 7

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Answer:

14.2 ft

Step-by-step explanation:

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nirvana33 [79]

Answer:

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And replacing we got:

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Step-by-step explanation:

For a tank similar to a cylinder the volume is given by:

$V = \pi r^2 h$

For this case we know that $r=5m$ represent the radius, $h = 10m$ the height and the rate given is:

$\frac{dV}{dt}= \frac{100 L}{min}$

For this case we want to find the rate of change of the water level when h =6m so then we can derivate the formula for the volume and we got:

$\frac{dV}{dt}= \pi r^2 \frac{dh}{dt}$

And solving for $\frac{dh}{dt}$ we got:

$\frac{dh}{dt}= \frac{\frac{dV}{dt}}{\pi r^2}$

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$Q = 100 \frac{L}{min} *\frac{1m^3}{1000L}= 0.1 \frac{m^3}{min}$

And replacing we got:

$\frac{dh}{dt}=\frac{0.1 m^3/min}{\pi (5m)^2}= 0.0012732 \frac{m}{min}$

And that represent $0.127 \frac{cm}{min}$

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3 years ago

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mojhsa [17]

-4.5 + (-1.5)

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