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3 years ago

For the geometric series 4+20+100+500 what is the value of a3?

1 answer:

Studentka2010 [4]3 years ago

8 0

<span>Every term in a sequence is denoted by a1 being the first one, a2 the second one, a3 the third one and so on. So in your case, a3 means, which one is the third term? So 100 would be your answer. </span>

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NO SCAM. PLEASE SHOW WORK. WILL GIVE BRAINLY TO CORRECT ANSWER.

sergeinik [125]

Answer:

$140$

Step-by-step explanation:

A regular polygon is a shape with equal sides and angles. Because of this, we can write the following equation to set two sides equal to each other:

$3a+b+3=2a+2b+6$

Solving, we will get a in terms of b:

$3a=2a+b+3,\\a=b+3$

Now we can substitute a for (b+3) into our equation:

$5a-2b+1=2a+2b+6,\\5(b+3)-2b+1=2(b+3)+2b+6,\\3b+16=4b+12,\\-b=-4,\\b=\boxed{4}$

Therefore, the length of each side of this polygon is $5(4+3)-2(4)+1=28$ .

Since the perimeter of the polygon consists of all five sides, the perimeter is:

$p=28\cdot 5 =\boxed{140}$

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3 years ago

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Kobotan [32]

Answer:

B. It is the quotient of 19 divided by 100

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