3 years ago

What is the unit price for an 8 ounce package costing 1.59

Mathematics

1 answer:

IrinaVladis [17]3 years ago

4 0

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Find the sum of this arithmetic series.<br> | 26 + 24.5 + 23 + 21.5 + ... - 17.5

emmainna [20.7K]

Answer:

127.5

Step-by-step explanation:

The given series is 26 + 24.5 + 23 + 21.5 + ... - 17.5

The first term of this series is a=26

The common difference is d=24.5-26=-1.5

The last term of the series is -17.5

The nth term is given by:

$u_n=a+d(n-1)$

$26+-1.5(n-1)=-17.5$

$-1.5n=-17.5-26-1.5$

$-1.5n=-45$

n=30

The sum of the series:

$S_{n}=\frac{n}{2}(a+l)$

$S_{30}=\frac{30}{2}(26+-17.5)$

$S_{30}=127.5$

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Answer:

the answer is (-3,0) or 4

Step-by-step explanation:

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Oduvanchick [21]

Answer:

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Step-by-step explanation:

combine whole numbers: 8*2

and combine exponents: 10^-3*10^10=10^7

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