SOLUTION: Solve: 1) 5^2X^2^+^3X=25 2) 3^-X=7^X+^2 3) 250000=100000(1+.06/12)^12(t)

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Question 1139283: Solve:
1) 5^2X^2^+^3X=25

2) 3^-X=7^X+^2

3) 250000=100000(1+.06/12)^12(t)

Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!


1) 5^2X^2^+^3X=25

The sequence of characters "X^2+^" has no meaning.
The sequence of characters "+^3" has no meaning.

2) 3^-X=7^X+^2

The sequence of characters "+^2" has no meaning.

3) 250000=100000(1+.06/12)^12(t)

The equation as you show it is solved by ordinary arithmetic....



The value of t is 250000, divided by the product of 100000 and (1+.06/12)^12.

Surely you meant

3) 250000=100000(1+.06/12)^(12t)

This is now an equation for finding the number of years t that it takes 100000 to increase to 250000 at 6% compounded monthly.




The variable is in the exponent; you need to take logs of both sides.




Use a calculator....

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