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2 years ago

Can someone plz explain I would appreciate it

Mathematics

1 answer:

mafiozo [28]2 years ago

4 0

Answer:

Angle of depression

Step-by-step explanation:

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How much do you need to subtract from 31/6 to make 5

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Answer:

1/6

3/10

1 7/8

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should be anyway

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2 years ago

Which is an irrational number

Rufina [12.5K]

Answer:

An irrational number is any number than cannot be written in the form p/q, where q is 0 Ex. pi, non-perfect squares

Step-by-step explanation:

In this case D. isn't rational but is irrational

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2 years ago

Random/probability sampling is when everyone in the group you are studying has an equal chance of participating.

zaharov [31]

Probability sampling<span> is when everyone in the group you are studying has an equal chance of participating.</span>

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2 years ago

A filter filled with liquid is in the shape of a vertex-down cone with a height of 9 inches and a diameter of 6 inches at its op

Alina [70]

Answer: Level of the liquid dropping at 28.28 inch/second when the liquid is 2 inches deep.

Step-by-step explanation:

Since we have given that

Height = 9 inches

Diameter = 6 inches

Radius = 3 inches

So, $\dfrac{r}{h}=\dfrac{3}{9}=\dfrac{1}{3}\\\\r=\dfrac{1}{3}h$

Volume of cone is given by

$V=\dfrac{1}{3}\pi r^2h\\\\V=\dfrac{1}{3}\pi \dfrac{1}{9}h^2\times h\\\\V=\dfrac{1}{27}\pi h^3$

By differentiating with respect to time t, we get that

$\dfrac{dv}{dt}=\dfrac{1}{27}\pi \times 3\times h^2\dfrac{dh}{dt}=\dfrac{1}{9}\pi h^2\dfrac{dh}{dt}$

Now, the liquid drips out the bottom of the filter at the constant rate of 4 cubic inches per second, ie $\dfrac{dv}{dt}=-4\ in^3$

and h = 2 inches deep.

$-4=\dfrac{1}{9}\times \pi\times (2)^2\dfrac{dh}{dt}\\\\-9\pi =\dfrac{dh}{dt}\\\\-28.28=\dfrac{dh}{dt}$

Hence, level of the liquid dropping at 28.28 inch/second when the liquid is 2 inches deep.

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2 years ago

THIS IS FOR STATISTICS (PAIRED T-TEST)

AleksandrR [38]

Answer:

Oh Ana significa familia

Step-by-step explanation:

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2 years ago