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RUDIKE [14]
3 years ago
13

Arithmetic series help!!!!

Mathematics
1 answer:
jekas [21]3 years ago
4 0

The initial term of the sequence is 15. The common difference is 3, so the n-th term (an) is

... an = 15 + 3(n-1)

For n=14, the 14th term of the sequence is

... a14 = 15 + 3(14 -1) = 54

The sum of terms is the average of the first and last, multiplied by the number of terms:

... sum = (15 + 54)/2·14 = 7·69 = 483

The appropriate answer choice is

... 54; 483

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A carton measures 3 feet by 2 feet by 2 feet. A machine can fill the carton with packing material in 3 seconds. How long would i
True [87]
1) we calculate the volume of the first carton:
volume=length x width x height
volume=3 ft * 2 ft * 2 ft=12 ft³

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2) we calculate the volume of the second carton. 
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3) we calculate the time that the machine needs for fill the second carton with packing material by the rule of three.

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answer: 30 seconds. 


5 0
3 years ago
Which is the right answer!
Rus_ich [418]

Answer:

24 cm

Step-by-step explanation:

The circumference would be 75.4

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I believe this would be 24 as your answer then

4 0
3 years ago
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lys-0071 [83]

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Step-by-step explanation:

7 0
3 years ago
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(b, a)

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3 0
3 years ago
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