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Flura [38]
3 years ago
7

Find the sum of the first 100 terms of the sequence below: -19, -15, -11, -7, -3, ... S100

Mathematics
1 answer:
ch4aika [34]3 years ago
5 0

Answer:

17900

Step-by-step explanation:

First term a = -19

common difference d = -15-(-19) = 4

number of terms, n = 100

sum of first 100 terms,

n/2(2a+(n-1)d)

= 100/2(2×(-19)+(100-1)4)

= 50×(-38+99×4)

= 50×358

= 17900

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klemol [59]

Answer:

£2,121.80

Step-by-step explanation:

To solve this problem, we can use the compound interest formula:

A=P(1+\frac{r}{n} )^{nt}

<em>P = initial balance</em>

<em>r = interest rate (decimal)</em>

<em>n = number of times compounded annually</em>

<em>t = time</em>

<em />

First, change 3% into a decimal:

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Now, plug in the values:

A=2,000(1+\frac{0.03}{1})^{1(2)}

A=2,121.80

Your answer is £2,121.80

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Answer:

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Step-by-step explanation:

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sergiy2304 [10]

Answer:

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Step-by-step explanation:

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Read 2 more answers
Justine ran for 35 minutes on monday, for 1 hour and 10 minutes on Wednesday , and for 1 hour and 15 minutes on friday. How many
Oduvanchick [21]

Answer:

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Step-by-step explanation:

This one should be an easy one

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