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Using logarithms. In economics, we most commonly use the the base e, which is known as ln. For example
5^x = 15, apply ln[.] to both sides
ln[5^x] = ln[15]
and since logarithms have the property of turning exponents into coefficients
xln5 = ln15
x = ln15/ln5
x = 1.6826
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How do you solve x over 5 equals 3?
x/5 = 3 Multiply both sides by 5 to find the value of x:- x = 15
How do you solve the equation -3x minus 5 equals -20?
Add 5 to both sides of the equation to get rid of the - 5. -3x - 5 + 5 = -20 + 5 Solve and simplify. -3x = -15 Divide both sides of the equation by -3. x = 5
X squared equals 25 solve for x?
5.
Solve 4x-10 equals 10 what is x?
x=5
How do you solve 12x equals 11x - 5?
12x = 11x - 5, subtract both sides by 11x x = -5
Solve 5 to the power of x equals -25?
30
How do you solve this 4m plus 15 equals 8m-5?
4m+15=8m-5 or,4m=20 or,m=5
How do you solve -2a plus 5 plus 3a equals 15-21?
depends what 'a' =
How do you solve negative 3x plus 5 equals 20?
-3x + 5 = 20 -3x = 15 x = -5
3x squared minus 2x when x equals 5?
You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
How do you solve 5 to the power x equals 0?
5 ^x = 0 5 = root square 0 5=0
Solve the equation 13A equals 65?
a equals 5
Solve the system using substitution 5x-y equals 5 diveded by5x-3y equals 15?
5x - y = 55x - 3y = 15from the first equation:5x = 5 + y , substitute it in the second equation:5 + y - 3y = 155 -2y = 15-2y = 15 - 5-2y = 10y = -5Now,solve for x :5x = 5 +y5x = 5 -5 = zerox = zero
Solve for x 4x2 equals -17x - 15?
(4x+3)(x-5) = 0 x = -3/4 or x = 5
How do you solve 2a to the power of 8b-5 if a to the power of 2b equals 5?
If you mean 2a8b - 5 = x and a2b = 5, then: 2(54) - 5 = x x = 1350 - 5 x = 1345
How do you solve x to the 2nd power minus 2x minus 15 equals 0?
2x2-x-15 = 0 When factorised: (2x+5)(x-3) = 0
How do you solve x over 5 equals 3?
x/5 = 3 Multiply both sides by 5 to find the value of x:- x = 15
