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Math Question on substituting!?
N = 1000 x 10 to the power of x
N = 125
What is the value of x?
Please show all the steps?
The answer is 3!
Thank you very much!
1 Answer
- ?Lv 79 years agoFavorite Answer
N = 1000 * 10 to the power of x
N = 1000 * 10^x
1000 = 10^3
(3 is not the answer. It's just the exponent of 10 that makes it equal to 1000)
N = 10^3 * 10^x
Multiplying - add the exponents
N = 10^(3 +x)
N = 125
125 = 10^(3 + x)
Take log of both sides
log (125) = 3 + x
2.096910013008056 = 3 + x
Subtract 3 from both sides
x = -0.903089986991944
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