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lesya [120]
4 years ago
15

19x+rx=−37x+w Solve for x?

Mathematics
1 answer:
Fittoniya [83]4 years ago
6 0
I hope this helps you

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If k‐th term of a sequence is ak = ( -1) ^k(2-k)k/2k-1
max2010maxim [7]

Given:

kth term of a sequence is

a_k=\dfrac{(-1)^k(2-k)k}{2k-1}

To find:

The next term a_{k+1} when k is even.

Solution:

We have,

a_k=\dfrac{(-1)^k(2-k)k}{2k-1}

Put k=k+1, to get the next term.

a_{k+1}=\dfrac{(-1)^{k+1}(2-(k+1))(k+1)}{2(k+1)-1}

If k is even, then k+1 must be odd and odd power of -1 gives -1.

a_{k+1}=\dfrac{(-1)(2-k-1)(k+1)}{2k+2-1}

a_{k+1}=\dfrac{(-1)(1-k)(1+k)}{2k+1}

a_{k+1}=-\dfrac{1^2-k^2}{2k+1}    [\because (a-b)(a+b)=a^2-b^2]

a_{k+1}=-\dfrac{1-k^2}{2k+1}

Therefore, the next term is a_{k+1}=-\dfrac{1-k^2}{2k+1}.

7 0
3 years ago
Use elimination to solve the system of equations.<br> 2x + 5y = 7<br> 3x + 6y = 3
REY [17]

Answer:

(-9,5) or x = -9 and y = 5

Step-by-step explanation:

Hope this helps!

5 0
3 years ago
Find the solution of <br> −<br> 6<br> (<br> 2<br> x<br> +<br> 1<br> )<br> =<br> 54<br> .
barxatty [35]

Answer:x-5

Step-by-step explanation:

-6(2x+1)=54

Distribute:

-12x-6=54

Add 6 on both sides:

-12x-6+6=54+6

-12x=60

Divide 12 on both sides:

-12x/-12=60/-12

x=-5

6 0
3 years ago
Please help meeeeeeeeeeeeeeeeeeeeeeee
Contact [7]

Answer:

She will have 6 pieces of ribbon

Step-by-step explanation:

She will have 0.64 inches of ribben left over

3 0
3 years ago
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where can you find a website that has the lengths of major league baseball fields from plates to various fences etc... (example.
Elena-2011 [213]

Answer:

6567

Step-by-step explanation:

add

8 0
4 years ago
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