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Georgia [21]
3 years ago
5

How do i simplify 4^(n-2)+4^(n-1)+...+4^0​

Mathematics
1 answer:
mariarad [96]3 years ago
8 0

add them all up or Mutiply and Divide all together I think

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How many gallons of pure alcohol should be added to 40 gallons of a 20% solution so
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Answer:

8/3

Step-by-step explanation:

i put equations as this:

x+40 = y

where x is galllons of pure mixture and y is the gallons of the new mixture

the other equation i id was:

x+0.2(40) = 0.25y

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y = 4x+32

solve using substitution

(x+40) = 4x+32

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i hope u understand plz inform me
6 0
4 years ago
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