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3 years ago

? 6) 7x2 - 7x someone tell me the answerrrr

Mathematics

1 answer:

yarga [219]3 years ago

7 0

Answer:

7x(x−1)

Step-by-step explanation:

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3 years ago

Amanda bought 6 pairs of jeans for $135.48. How much would she need to pay for 9 pairs of jeans?

yaroslaw [1]

Answer:

$203.22

Step-by-step explanation:

Find out how much each pair of jeans cost:

$\frac{price}{pairs} =\frac{135.48}{6} =\frac{135.48/6}{6/6}= 22.58$

Each pair of jeans cost $22.58.

Multiply the unit price by 9 to get the total price for 9 jeans:

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Amanda should be paying $203.22 for 9 pairs of jeans.

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3 years ago

Find an explicit rule for the nth term of the sequence.

nlexa [21]

Answer:

An explicit rule for the nth term of the sequence will be:

$a_n=-4\cdot \:2^{n-1}$

Thus, option (A) is true.

Step-by-step explanation:

Given the sequence

$-4, -8, -16, -32, ...$

A geometric sequence has a constant ratio r and is defined by

$a_n=a_0\cdot r^{n-1}$

Computing the ratios of all the adjacent terms

$\frac{-8}{-4}=2,\:\quad \frac{-16}{-8}=2,\:\quad \frac{-32}{-16}=2$

As the ratio 'r' is the same.

$r=2$

$a_1=-4$

Hence, the nth term of the sequence will be:

$a_n=a_0\cdot r^{n-1}$

substituting the values $r=2$ and $a_1=-4$

$a_n=-4\cdot \:2^{n-1}$

Therefore, an explicit rule for the nth term of the sequence will be:

$a_n=-4\cdot \:2^{n-1}$

Thus, option (A) is true.

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3 years ago