# Logarithm - practice problems

Direction: Solve each problem carefully and show your solution in each item.#### Number of problems found: 75

- Logarithm

Determine the number whose decimal logarithm is -3.8. - Decadic logarithm

Log10 30 - log10 3 = X. Find X . - Gain

Find the gain whenever the output power is 21x the input power. - Log

Calculate the value of expression log |3 +7i +5i²| . - Log

If log_{4}x+ log_{8}x = log_b x, what is b? - Exponential equation

Solve exponential equation (in real numbers): 2^{3x-6}=9 - Exponential 8360

Solve the exponential equation: 8 raised to x = 40 - Triangle

Can an equilateral triangle have a right angle? - Exponential equation

In the set R, solve the equation: 7^{ -5 +19x}=4^{ 3 -20x} - Logarithmic equation

Solve equation: log_{13}(7x + 12) = 0 - Expression 3801

What is the value of x in the expression 8^x = 1/64 - Powers 3

2 to the power of n divided by 4 to the power of -3 equal 4. What is the value of n? - Intercept with axis

F(x)=log(x+4)-2, what is the x intercept - Chebyshev formula

To estimate the number of primes less than x Chebyshev formula is used: Pi(x) = 1.11 (x)/(ln x). Estimate the number of primes less than 30300537. - Coordinate

Determine the missing coordinate of the point M [x, $y] of the graph of the function f by rule: y = $b^{x} - Sequence

Calculate what member of the sequence specified by (5^{n-2}+15) has value 20. - Expression: 4085

Determine the value of x and y in the expression: x! · 10^y = 0.0504. - Simplify logarithm expr

Given that logxU + logxV =p and logxU - logxV =q Prove that U=x^½(p+q) - Sum-log

The sum of two numbers is $s, and the sum of their logarithms (base 10) is $l. Determine these numbers. - Decibel

A circuit has an input power of 92 mW. Its output power is 12 mW. What is the loss in decibels?

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