High School

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What is the benefit of logarithms?

A. Logarithms are ways of finding percentages.
B. Logarithms are a way to add, subtract, and multiply, but NOT divide.
C. Logarithms and exponents are the same; it's just a more confusing way to write exponents.
D. Logarithms are almost like "reverse exponents." We can use logarithms when we don't know the exponent. Using the logarithm function on the calculator can give us the value of the exponent.

Find the value of x. (Remember, if there's no subscript number next to the log function, it's base 10.)

[tex] \log (x) = 2 [/tex]

A. 20
B. 100
C. 50
D. 1024

Answer :

Sure! Let's solve the problem step-by-step:

We are given the equation [tex]\(\log(x) = 2\)[/tex].

1. Understanding Logarithms:
- When we have a logarithmic expression like [tex]\(\log(x)\)[/tex], and there's no base number written, it means the base is 10. This is commonly known as the "common logarithm."

2. Interpreting the Equation:
- The equation [tex]\(\log(x) = 2\)[/tex] means that we are looking for a number [tex]\(x\)[/tex] such that when 10 is raised to some power, it equals [tex]\(x\)[/tex].
- In logarithmic form, this means: [tex]\(10^b = x\)[/tex], where [tex]\(b\)[/tex] is the value that [tex]\(\log(x)\)[/tex] equals, which in this case is 2.

3. Finding the Value of x:
- Solving the equation [tex]\(10^2 = x\)[/tex], we find that [tex]\(x = 10 \times 10 = 100\)[/tex].

So, the value of [tex]\(x\)[/tex] is 100. This is the answer to the problem.

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