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Olenka [21]
3 years ago
7

What does x stand for in 4+x=3x

Mathematics
1 answer:
Irina18 [472]3 years ago
7 0

x stands for a variable, in which the variable would be replaced by a number(s) that would make the equation true.

Hope this helps

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Write an expression for the eighth partial sum of the series using summation notation
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Answer:

option B

Step-by-step explanation:

9/10 + 6/5 + 3/2...........

We find the difference between the terms

\frac{6}{5} - \frac{9}{10}

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We will get the same difference when we subtract consecutive terms.

so , d= 3/10, a= 9/10

we find the formula for nth term

a_n = a+(n-1) d

a_n = \frac{9}{10} + (n-1)\frac{3}{10}

a_n = \frac{9}{10} +\frac{3}{10}n-\frac{3}{10}

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a_n = \frac{3}{5} +\frac{3}{10}n

we need to find eighth partial sum so we  take n=1 to 8

sum of 8 terms (\frac{3}{5} +\frac{3}{10}n)

So option B is correct


4 0
3 years ago
What is 12 1/2 x 4 2/3
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Answer:

174 1/3

Step-by-step explanation:

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