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telo118 [61]
3 years ago
13

Which one is linear

Mathematics
2 answers:
Daniel [21]3 years ago
5 0
A because linear means straight line
Elenna [48]3 years ago
3 0
A is the answer !!!!!
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56 days

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Here given:

initial amount: 400 millicuries

final amount: 3.125 millicuries

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time taken: ?

Hence solve for time taken:

\sf \rightarrow A  = A_O   \ x \ (\dfrac{1}{2} )^{\dfrac{t}{h} }

<u>insert values given</u>

\sf \rightarrow 3.125  = 400  \ x \ (\dfrac{1}{2} )^{\dfrac{t}{8} }

<u>divide both sides by 400</u>

\sf \rightarrow (\dfrac{1}{2})^{\dfrac{t}{8}}=0.0078125

<u>apply exponent rule</u>

<u />\sf \rightarrow {\dfrac{t}{8}}=\dfrac{ln(0.0078125)}{ln(1/2)}

<u>simplify</u>

\rightarrow \sf \dfrac{t}{8}=7

<u>multiply both sides by 8</u>

\rightarrow \sf t = 56

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