2 years ago

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Mathematics

1 answer:

marysya [2.9K]2 years ago

3 0

Answer:

Step-by-step explanation:

im pretty sure the right answer would be 12 and 21 just doesn't look right

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Step-by-step explanation:

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440-52.8

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goblinko [34]

Answer:

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Step-by-step explanation:

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Find the sum of the geometric. Remember to show work and explain.

Allushta [10]

Answer: 393.75

<u>Step-by-step explanation:</u>

$\sum\limits^6_1 {400\bigg(\dfrac{1}{2}\bigg)^n}\\\\n=1:\ 400\bigg(\dfrac{1}{2}\bigg)^1\quad =200\\n=2:\ 400\bigg(\dfrac{1}{2}\bigg)^2\quad =100\\n=3:\ 400\bigg(\dfrac{1}{2}\bigg)^3\quad =50\\n=4:\ 400\bigg(\dfrac{1}{2}\bigg)^4\quad =25\\n=5:\ 400\bigg(\dfrac{1}{2}\bigg)^5\quad =12.5\\n=6:\ 400\bigg(\dfrac{1}{2}\bigg)^6\quad =6.25\\.\qquad \qquad \qquad \qquad \quad \_\_\_\_\_\_\_\_\_\_\\\\.\qquad \qquad \quad \quad \text{Sum}=\large\boxed{393.75}$