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masha68 [24]
2 years ago
13

Hi how are you doing today

Mathematics
2 answers:
soldi70 [24.7K]2 years ago
7 0

Answer:

Fine,I guess :)...btw haii

DanielleElmas [232]2 years ago
5 0

Answer:

we're good, how about you

Step-by-step explanation:

Hope this helps

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PLZZZ HURRY!!!!!
klasskru [66]

Answer:

$360 I think

Step-by-step explanation:

240 <em>divided</em> by 2/3 = 360

I hope this helps, sorry if it isn't the right answer

4 0
3 years ago
Read 2 more answers
Definicion del concepto de numero
NNADVOKAT [17]

Answer:

1.

Mathematical concept that expresses an amount in relation to the computer unit; results from counting the elements that make up a set.

"Cardinal number"

2.

A graphic sign or set of graphic signs that expresses or represents that amount.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
an inverted conical water tank with a height of 20 ft and a radius of 8 ft is drained through a hole in the vertex (bottom) at a
viktelen [127]

Answer:

the rate of change of the water depth when the water depth is 10 ft is;  \mathbf{\dfrac{dh}{dt}  = \dfrac{-25}{100  \pi} \  \ ft/s}

Step-by-step explanation:

Given that:

the inverted conical water tank with a height of 20 ft and a radius of 8 ft  is drained through a hole in the vertex (bottom) at a rate of 4 ft^3/sec.

We are meant to find the  rate of change of the water depth when the water depth is 10 ft.

The diagrammatic expression below clearly interprets the question.

From the image below, assuming h = the depth of the tank at  a time t and r = radius of the cone shaped at a time t

Then the similar triangles  ΔOCD and ΔOAB is as follows:

\dfrac{h}{r}= \dfrac{20}{8}    ( similar triangle property)

\dfrac{h}{r}= \dfrac{5}{2}

\dfrac{h}{r}= 2.5

h = 2.5r

r = \dfrac{h}{2.5}

The volume of the water in the tank is represented by the equation:

V = \dfrac{1}{3} \pi r^2 h

V = \dfrac{1}{3} \pi (\dfrac{h^2}{6.25}) h

V = \dfrac{1}{18.75} \pi \ h^3

The rate of change of the water depth  is :

\dfrac{dv}{dt}= \dfrac{\pi r^2}{6.25}\  \dfrac{dh}{dt}

Since the water is drained  through a hole in the vertex (bottom) at a rate of 4 ft^3/sec

Then,

\dfrac{dv}{dt}= - 4  \ ft^3/sec

Therefore,

-4 = \dfrac{\pi r^2}{6.25}\  \dfrac{dh}{dt}

the rate of change of the water at depth h = 10 ft is:

-4 = \dfrac{ 100 \ \pi }{6.25}\  \dfrac{dh}{dt}

100 \pi \dfrac{dh}{dt}  = -4 \times 6.25

100  \pi \dfrac{dh}{dt}  = -25

\dfrac{dh}{dt}  = \dfrac{-25}{100  \pi}

Thus, the rate of change of the water depth when the water depth is 10 ft is;  \mathtt{\dfrac{dh}{dt}  = \dfrac{-25}{100  \pi} \  \ ft/s}

4 0
3 years ago
The essay lengths of 29 randomly sampled essays are used to estimate the mean of the population. What t-score should be used to
slavikrds [6]

Answer:

A t-score of 1.701 should be used to find the 95% confidence interval for the population mean

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 29 - 1 = 28

Now, we have to find a value of T, which is found looking at the t table, with 28 degrees of freedom(y-axis) and a confidence level of 0.95(t_{95}). So we have T = 1.701.

A t-score of 1.701 should be used to find the 95% confidence interval for the population mean

5 0
2 years ago
Help!!!!!! Quick <br> Evaluate (x + y)° for x = -3 and y = 5.<br> - 1/2<br> 2<br> 1<br> O
MrMuchimi

Answer:

it is 1

Step-by-step explanation:

The power of 0 causes all numbers to negate to 1.
Anything to the power of 0 is 1


For example:

(10)^0 = 1

7 0
2 years ago
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