3 years ago

In an arithmetic sequence, the seventh term is −9 and the nineteenth term is 39.

Mathematics

1 answer:

Stella [2.4K]3 years ago

3 0

Answer:

37.5% that is the answer

Step-by-step explanation:

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Vlad1618 [11]

Here is your answer

$\bold{x=12}$

REASON:

$Concept used$ : The opposite sides of a parallelogram are equal.

So, in above given figure

$3x+7=5x-17$ (measures of opposite sides)

$5x-3x= 17+7$

$2x= 24$

$x= 24/2$

$x= 12$

HOPE IT IS USEFUL

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

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