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Kazeer [188]
3 years ago
15

The formula uppercase S = StartFraction n (a Subscript 1 Baseline plus a Subscript n Baseline) Over 2 EndFraction gives the part

ial sum of an arithmetic sequence. What is the formula solved for an?
a Subscript n Baseline = StartFraction 2 uppercase S minus a Subscript 1 Baseline n Over n EndFraction
a Subscript n Baseline = StartFraction 2 uppercase S + a Subscript 1 Baseline n Over n EndFraction
a Subscript n Baseline = 2 uppercase S + a Subscript 1 Baseline n + n
a Subscript n Baseline = 2 uppercase S minus a Subscript 1 Baseline n + n

Mathematics
2 answers:
yanalaym [24]3 years ago
5 0

Answer:

Step-by-step explanation

hope this helps

zmey [24]3 years ago
5 0

Answer:

a.

Step-by-step explanation:

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at a local soccer game, 6/7 of the people were fans. one-half of those fans were wearing hats. what fraction of the people was w
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Answer: \frac{3}{7}

You simply need to multiply \frac{6}{7}*\frac{1}{2}.
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There are 20 students In Marks class.Ten percent of the students in Marks homeroom class are also In art class.
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You go to a local mechanic to get your tires changed. The tires cost $300. There is a 6% sales tax, but you get a 10% discount.
Romashka-Z-Leto [24]

Answer:

a) T(x)=300x+18x=318x

b) D(x)=318x-(0.1)(318)+10x\\=296.2x

c) Yes.

Step-by-step explanation:

We have that:

Tires=$300\\Tax=0.006\\Discount=0.1\\

And we have $10 free of taxes.

Making x= number of tires to buy, then we have that the total cost of tires is:

Total_{Tires}=300x

So, what we pay for taxes is given by:

Taxes=(300x)(0.06)=18x

a) Then, according to the above, we can write down the total cost before the discount as:

T(x)=300x+18x=318x

b) And the total cost after discounts, is then given by:

D(x)=318x-(0.1)(318)+10x\\=296.2x

c) If the discount is added first, then less tax will be paid because the amount on which it is paid is lower. If the discount is added later, then the taxes will have been taxed on a higher amount, so it does matter whether they are added first or later.

6 0
3 years ago
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3 years ago
How can 26n-7m+4(10n-6m)
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Answer:

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26n-7m+4(10n-6m)

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2 years ago
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