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sesenic [268]
3 years ago
9

Someone please help ????????

Mathematics
1 answer:
Zanzabum3 years ago
8 0

Answer:

use the distance formula,

by using it, prove the adjacent sides of the quadrilateral DEFG

hence, DEFG would be a rhombus

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The product of c and 2
Arlecino [84]

Answer:

c2?

Step-by-step explanation:

3 0
3 years ago
1) Use power series to find the series solution to the differential equation y'+2y = 0 PLEASE SHOW ALL YOUR WORK, OR RISK LOSING
iogann1982 [59]

If

y=\displaystyle\sum_{n=0}^\infty a_nx^n

then

y'=\displaystyle\sum_{n=1}^\infty na_nx^{n-1}=\sum_{n=0}^\infty(n+1)a_{n+1}x^n

The ODE in terms of these series is

\displaystyle\sum_{n=0}^\infty(n+1)a_{n+1}x^n+2\sum_{n=0}^\infty a_nx^n=0

\displaystyle\sum_{n=0}^\infty\bigg(a_{n+1}+2a_n\bigg)x^n=0

\implies\begin{cases}a_0=y(0)\\(n+1)a_{n+1}=-2a_n&\text{for }n\ge0\end{cases}

We can solve the recurrence exactly by substitution:

a_{n+1}=-\dfrac2{n+1}a_n=\dfrac{2^2}{(n+1)n}a_{n-1}=-\dfrac{2^3}{(n+1)n(n-1)}a_{n-2}=\cdots=\dfrac{(-2)^{n+1}}{(n+1)!}a_0

\implies a_n=\dfrac{(-2)^n}{n!}a_0

So the ODE has solution

y(x)=\displaystyle a_0\sum_{n=0}^\infty\frac{(-2x)^n}{n!}

which you may recognize as the power series of the exponential function. Then

\boxed{y(x)=a_0e^{-2x}}

7 0
3 years ago
2. A bag contains 3 red, 4 white, and 5 blue marbles. Jason begins removing marbles from the bag at
galben [10]

Answer:

c

the total number of marbles are 12 and there are 3 colours so you divide 12 by 3

6 0
3 years ago
Read 2 more answers
PLEASE HELP QUICK I AM IN A RUSH
Alekssandra [29.7K]
C because it simplifies to 0=0 which proves that it has infinite solutions!
7 0
3 years ago
Read 2 more answers
First to answer gets brainliest
Grace [21]
Answer: 14
Square both sides, getting you
2x-3=25
Add 3 to both sides
2x=28
Divide both sides by 2
x=14
8 0
3 years ago
Read 2 more answers
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