106 Answered Questions for the topic Logarithmic Equation

Solving Logarithmic equation

(1/(log2(x+2)2) + (1/(log2(x-2)2) = 5 /12

Using formula Nt = N0 x 2^n Calculate amount of time it takes for 1 cell that divide every 5 hours to make 8.8 x 10^14 cells

When I try to calculate the log2 8.8 x 10^14 = n, I get approximately 50 divisions as my answer. Shouldn't I be able to get 8.8 x 10^14 if I now substitute 50 as n in 2^n power? I get a slightly... more

Solving logarithmic equation

52x-(51+50).5x+51=0And my answer just simply rewrite into (5x)2-6.5x+5=0And then write into (5x-1)(5x-5),why?What's the process between (5x)2-6.5x+5=0 to this equation?

Log 1000 - log 1000 with common base as 3

plz help to solve this question

E=1.4(logC 2 - logC1) if C2 is three times C1 what is the answer to E

Energy equation

help with logarithmic problem


Logarithim Question

Solve the Equations   1.log x=6   I got 100,000 but I am just checking to see if I am correct   2. log(lower)5 (regular)5^3   I got 3  

(a) 6^2x = 250 (b) log3 (x-3) + log3 (x-7) = 4

Round answers to four decimal places.

When evaluating exponential equations using logarithms, why do we need to isolate the variable first?

For example,   3e^(2x)=1821   The correct solution would be,   1. Divide 3 on each side, thus         e^(2x)=607 2. Take the natural log on both sides:          lne^(2x)=ln607 3. Eliminate... more

Logarithm Equation

What is x in the equation log1/2 (1/9)=log2x2 

The population P (in thousands) of Pittsburgh, PA from 2000 to 2003 can be modeled by P=2430e^ -0.0029t where t represents the yr, with t=0 corresponds to 2000.

Question: What were the populations of PA in 2000 and 2003?   Answer: 2000: 2,430,000, 2003: 2,408,950   Can someone please explain/list to me the steps to finding these answers?

0.5t=ln(1.5t+20) solve for t


Solving exponential and logarithmic equations

A certain form of bacteria doubles every two hours. If a sample begins with 3 bacteria,(a) write a function to describe the population at time t and,(b) find the population a t = 2 hours

Logarithmic equation in chemistry

Hi! If i have boric solution (Mvb) and it contains (p%) of boric acid. How much i have to add boric acid (Xb) so that the solution have (P%) of boric acid? Only using these letters to make an... more

Math problem in chemistry

Electomagnetic radiation equation in task A)   I(x) is radiation emitted through the material layer intensity (W/m2) u is absorption coefficient (1/mm) x is thickness   A)From the I(x)=I0e-ux... more

Solve Logarithms

Solve Log327+Log81/8-Log164=Log4x

Condense the expression to a single logarithm.

ln x + 2 ln y + 1/4 * ln z

A=p(1+r/n)^tn and A=Pe^rt

Which is a better plan for investing $10,000 for 8 years?  Plan A: 4.5% Compounded continuously or  Plan B: 5.5% Compounded daily? Rewrite in logarithmic form:2^4=16 Solve the log... more

Rewrite equation in logarithmic form. - Show Work.

Equation: 192 = 361   Choices:   A) log361 19 = 2   B) log361 2 = 19   C) log19 361 = 2   D) log19 2 = 361

logarithmic equation log2(x+4)+log2(x+7)=2

solve the logarithmic equation log2(x+4)+log2(x+7)=2   Please Explain

Solve the equation

log2 3 + log2 x = log2 5 + log2(x − 2)

Rewrite as a logarithmic equation e^3=x

Need a answer 

Solve for x. Round to the nearest thousandth if necessary.

log2 x + log2 (x-2) = 3
1 3 4 5

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