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3 years ago

I don't understand this question.

Mathematics

1 answer:

Aliun [14]3 years ago

4 0

Answer:

$c_{5}$ = - 12

Step-by-step explanation:

To find the 5 th term in the sequence, calculate the 3 rd and 4 th terms, that is

$c_{3}$ = - 2 $c_{2}$ - $c_{1}$ - 1 ← substitute in values

= - 2(1) - 2 - 1 = - 2 - 2 - 1 = - 5

$c_{4}$ = - 2 $c_{3}$ - $c_{2}$ - 1 ← substitute values

= - 2(- 5) - 1 - 1 = 10 - 1 - 1 = 8

$c_{5}$ = - 2 $c_{4}$ - $c_{3}$ - 1 ← substitute values

= - 2(8) - (- 5) - 1 = - 16 + 5 - 1 = - 12

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4 years ago

Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1

Lorico [155]

Two workers finished a job in 7.5 days.

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(t+8) = time required by the other worker (shirker)

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A typical shared work equation

7.5%2Ft + 7.5%2F%28%28t%2B8%29%29 = 1

multiply by t(t+8), cancel the denominators, and you have

7.5(t+8) + 7.5t = t(t+8)

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15t + 60 = t^2 + 8t

form a quadratic equation on the right

0 = t^2 + 8t - 15t - 60

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then

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3 years ago

Read 2 more answers

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3 years ago

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avanturin [10]

Answer:

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Step-by-step explanation:

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