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3 years ago

8:20 plus 40 minutes

Mathematics

2 answers:

makkiz [27]3 years ago

8 0

Answer:

9:00

Step-by-step explanation:

20 minutes + 40 minutes = 60 minutes

60 minutes = 1 hour

8:00 plus 1 hour = 9:00

umka21 [38]3 years ago

6 0

Answer:

9:00

Step-by-step explanation:

8:20

+0:40

=8:60

9:00

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Find the radius of convergence, r, of the series. ∞ xn 2n − 1 n = 1 r = 1 find the interval, i, of convergence of the series. (e

Bingel [31]

Assuming the series is

$\displaystyle\sum_{n\ge1}\frac{x^n}{2n-1}$

The series will converge if

$\displaystyle\lim_{n\to\infty}\left|\frac{\frac{x^{n+1}}{2(n+1)-1}}{\frac{x^n}{2n-1}}\right|$

We have

$\displaystyle\lim_{n\to\infty}\left|\frac{\frac{x^{n+1}}{2(n+1)-1}}{\frac{x^n}{2n-1}}\right|=|x|\lim_{n\to\infty}\frac{\frac1{2n+1}}{\frac1{2n-1}}=|x|-\lim_{n\to\infty}\frac{2n-1}{2n+1}=|x|$

So the series will certainly converge if $-1$ , but we also need to check the endpoints of the interval.

If $x=1$ , then the series is a scaled harmonic series, which we know diverges.

On the other hand, if $x=-1$ , by the alternating series test we can show that the series converges, since

$\left|\dfrac{(-1)^n}{2n-1}\right|=\dfrac1{2n-1}\to0$

and is strictly decreasing.

So, the interval of convergence for the series is $-1\le x$ .

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4 years ago

What is 3/4 divided by 2 equal

Viktor [21]

Answer:

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Step-by-step explanation:

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3 years ago

A laundry bag contains 7 brown socks and 2 black socks. Find the probability of picking a brown sock first,

PilotLPTM [1.2K]

Answer

7/9 chance to pick a brown sock first and 1/4 chance to get a black sock after

Step-by-step explanation:

there are 9 total socks and 7 are brown so you will have a 7/9 chance to get a brown sock

then if you do get a brown the total number of socks will be 8 in the bag so then you have a 2/8 chance which can be simplified to 1/4

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4 years ago

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3 years ago

A large dump truck will empty its full load of stone onto a small plot of land for storage. The rock forms a cone that is 9 feet

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Volume of a cone = (1/3) * Area of Base * height
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4 years ago

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