# Solve for x & r

Discussion in 'Other Pre-University Math' started by nycmathguy, Jul 2, 2022.

1. ### nycmathguy

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nycmathguy, Jul 2, 2022
2. ### MathLover1

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1.
y=e^5.184/sqrt(x)

sqrt(x)=e^5.184/y

x=sqrt(e^5.184/y)

2.
A=P*e^(rt)

e^(rt)=A/P

ln(e^(rt))=ln(A/P)

(rt)ln(e)=ln(A)-ln(P)

(rt)*1=ln(A)-ln(P)

rt =ln(A)-ln(P)

r =(ln(A)-ln(P))/t

MathLover1, Jul 2, 2022
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3. ### nycmathguy

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Very good. Please, use Wolfram for all replies involving algebra work.

nycmathguy, Jul 2, 2022
4. ### MathLover1

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1. just last line

2.

MathLover1, Jul 2, 2022
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5. ### nycmathguy

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nycmathguy, Jul 2, 2022
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