Find the sum of the first four terms of the geometric series 100 + 50 + 25 + ...
1 answer:
Answer:
<em><u>Decimal</u></em><em><u>:</u></em>
100 + 50 + 25 + 12.5 + 6.25 + 3.125 + 1.5625
<u><em>Fraction</em></u><u><em>:</em></u>

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The period of a sinusoid

is

, so any range such that

will give two complete periods.
Answer:
- first distribute the 5 to the d and 4
- 5(d+4) then becomes 5d+20
- then subtract 20 from both sides of the equation
- -5=5d+20 is now -25=5d
- lastly divide 5 from both sides
- -25=5d is now -5=d
- hope this helps!