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Sliva [168]
3 years ago
11

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

Mathematics
1 answer:
Mariulka [41]3 years ago
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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3 years ago
Your cat weighs 12 pounds. How much does she weigh in ounces?
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Unit rate defined as the rates expressed as a quantity of 1, such as 3 feet per second or 8 miles per hour, they are called unit rates.

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\text{Cat weighs in ounces} = 16 \times 12 = 192 ounces

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Order from least to greatest. 2.5, 2/4 , 25%, 0.2
ololo11 [35]
Try to change them to percent
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