Find S15 for 1 + 1.5 + 2.25 + 3.375 + …

1 answer:

6 0

By keenly investigating the given above, it is observed that the given is a geometric sequence with first term (a1) equals 1 and common ratio (r) is 1.5. The geometric series can be calculated by the equation,

Sn = a1 x (1 - r^n) / (1 - r)

where n is 15.

Substituting the known values,
<span>Sn = 1 x (1 - 1.5^15) / (1 - 1.5) = 873.78778
</span>
Therefore, S15 is approximately equal to 873.79.

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Six less than 4 times a number

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Step-by-step explanation:

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griffin ordered a pair of sneakers online. he had 16 credit that he applied toward the purchase, and then he used a credit card

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Step-by-step explanation:

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A=2(1+√2) $a^{2}$

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A≈1086.4

The answer is A.

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Read 2 more answers

If a TV cost $3960.00 and toes on sale during the following week with a 25% discount, what will be the total cost of the TV? but

Free_Kalibri [48]

we have the price of TV is $3960.if we round off to the nearest tens we get same 3960 because we have 0 at the end which means lesser than 5 so 60 will be the nearest ten.

discount = $\frac{25}{100} *3960=990$