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3 years ago

If x is 6, then 7x = ?

Mathematics

2 answers:

luda_lava [24]3 years ago

8 0

Answer:

Step-by-step explanation:

x=6

7x=?

7x= x*7

7x=6*7

7x=42

So the answer is 42,

Hope this helps!

zvonat [6]3 years ago

5 0

The first thing u will do is put the 6 in place of the x. so it would be 7 times 6. the answer is 42

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Vladimir [108]

Step-by-step explanation:

F-27=19

F= 19+27

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3 years ago

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eduard

Factors of a number are integers that when multiplied together will equal the original number
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4 years ago

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3 years ago

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siniylev [52]

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Step-by-step explanation:

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3 years ago

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Find the sum of the first 6 terms of the sequence: –3, 1, 5, 9, . . .A) 45B) 42C) 48D) 25

Leni [432]

SOLUTION

From the sequence give

–3, 1, 5, 9, . . .

The first term, a = -3

The common difference, d = 4 (gotten by adding 4 to the next term).

The number of terms required n = 6.

Formula for sum of an arithmetic sequence is given by

$S_n=\frac{n}{2}\lbrack2a+(n-1)d\rbrack$

Substituting these values into the equation above we have

$\begin{gathered} S_n=\frac{n}{2}\lbrack2a+(n-1)d\rbrack \\ S_6=\frac{6}{2}\lbrack2\times-3+(6-1)4\rbrack \\ S_6=3\lbrack-6+(5)4\rbrack \\ S_6=3\lbrack-6+20\rbrack \\ S_6=3\lbrack14\rbrack \\ S_6=42 \end{gathered}$

Hence, the answer is 42, option B

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1 year ago