Witch is greater 6.41 or 6.38

Mathematics

2 answers:

VMariaS [17]2 years ago

7 0

Answer:

6.41

Step-by-step explanation:

6.41 is a greater number

bearhunter [10]2 years ago

4 0

Answer:

6.41

Step-by-step explanation:

if u subtract 6.38 from 6.41 you have .03 left over.

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Find the flow rate through a tube of radius 6 cm, assuming that the velocity of fluid particles at a distance r cm from the cent

vaieri [72.5K]

Answer:

791.68 cm/s

Step-by-step explanation:

The volume flow rate can be interpreted as the integral of fluid velocity over area

$\dot{V} = \int\limits^6_0 {v(r) 2\pi r} \, dr\\\dot{V} = 2\pi\int\limits^6_0 {(25-r^2)r} \, dr\\\dot{V} = 2\pi\int\limits^6_0 {25r-r^3} \, dr\\\\\dot{V} = 2\pi[12.5r^2 - r^4/4]_0^6\\\dot{V} = 2\pi(12.5*6^2 - 6^4/4 - 12.5*0 - 0)\\\dot{V} = 2\pi*126 = 791.68 cm/s$

7 0

3 years ago

Help answering this simple Series Question? I don't know what I did wrong!

Tatiana [17]

Looks like you just evaluated the summand for the given value of $n$ , whereas the question is asking you to find the value of the sum for the first $n$ terms.

Let $S_k=\displaystyle\sum_{n=1}^k\frac3{(-2)^n}$ . Then $S_k$ is the $k$ th partial sum.

$S_1$ happens to be the first term in the series, which is why that box is marked correct:

$S_1=\displaystyle\sum_{n=1}^1\frac3{(-2)^n}=\frac3{(-2)^1}=-1.5$

But the next partial sum is not correct:

$S_2=\displaystyle\sum_{n=1}^2\frac3{(-2)^n}=\frac3{(-2)^1}+\frac3{(-2)^2}=-0.75$

and this is not the same notion as the second term (which indeed is 0.75) in the series.

5 0

3 years ago

Help please and thank you

Akimi4 [234]

-6×-6=36
f-34=36
34+36=70
f=70

7 0

3 years ago

Find the square root of these numbers to the nearest tenth. 72 = 32 = 481 =

larisa86 [58]

Squrt of 72 is 8.49

squrt of 32 is 5.66

squrt of 481 is 21.93

4 0

3 years ago