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2 years ago

A plane leaves Texas. It arrives in London 10 hours later.what time did it leave Texas

Mathematics

2 answers:

tankabanditka [31]2 years ago

5 0

10 hours before it left?

GenaCL600 [577]2 years ago

5 0

The correct answer is: 10 hours before it left

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Please help me with the below question.

VMariaS [17]

By letting

$y = \displaystyle \sum_{n=0}^\infty c_n x^{n+r}$

we get derivatives

$y' = \displaystyle \sum_{n=0}^\infty (n+r) c_n x^{n+r-1}$

$y'' = \displaystyle \sum_{n=0}^\infty (n+r) (n+r-1) c_n x^{n+r-2}$

a) Substitute these into the differential equation. After a lot of simplification, the equation reduces to

$5r(r-1) c_0 x^{r-1} + \displaystyle \sum_{n=1}^\infty \bigg( (n+r+1) c_n + (n + r + 1) (5n + 5r + 1) c_{n+1} \bigg) x^{n+r} = 0$

Examine the lowest degree term $\left(x^{r-1}\right)$ , which gives rise to the indicial equation,

$5r (r - 1) + r = 0 \implies 5r^2 - 4r = r (5r - 4) = 0$

with roots at r = 0 and r = 4/5.

b) The recurrence for the coefficients $c_k$ is

$(k+r+1) c_k + (k + r + 1) (5k + 5r + 1) c_{k+1} = 0 \implies c_{k+1} = -\dfrac{c_k}{5k+5r+1}$

so that with r = 4/5, the coefficients are governed by

$c_{k+1} = -\dfrac{c_k}{5k+5} \implies \boxed{g(k) = -\dfrac1{5k+5}}$

c) Starting with $c_0=1$ , we find

$c_1 = -\dfrac{c_0}5 = -\dfrac15$

$c_2 = -\dfrac{c_1}{10} = \dfrac1{50}$

so that the first three terms of the solution are

$\displaystyle \sum_{n=0}^2 c_n x^{n + 4/5} = \boxed{x^{4/5} - \dfrac15 x^{9/5} + \frac1{50} x^{13/5}}$

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1 year ago

Find the area enclosed by the graphs of x + y = 6 , x − y = 0 , y + 5x = 6 .

LekaFEV [45]

?????????????????????????????????????????????????/

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2 years ago

PLS HELP I DONT UNDERSTAND :( WILL GIVE BRAINLIEST!! +25 POINTS AHHHH

guajiro [1.7K]

Answer:

the anwser is A

Step-by-step explanation:

i understand

very well and i just took that lesson

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3 years ago

Wes wants to buy 3 pepper plants from the garden center. The regular price of a pepper plant

Nataly_w [17]

The sale price of 3 pepper plants after a 20% discount is $3

The regular price of one pepper plant is $5 if Wes wants to buy 3 pepper plants 5x3 is 15 and since he can use a 20% off coupon on the pepper plants. 20% of 15 is 3 meaning the sale price for 3 pepper plants after using the 20% discount coupon is $3.

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3 years ago

Read 2 more answers

Whats the solution for 9+4n -79 PLEASE ANSWER

iogann1982 [59]

Answer:

I think this is the correct solution

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2 years ago