# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 610348: Hi guys i need some help with this question. expand the quantity as sum and difference of simpler logarithmic functions (ln(x^2(sqrt(2x-1)))/(2x+1)) Click here to see answer by ankor@dixie-net.com(15647)

 Question 610647: Simplify the expression to a single log term: log(x^2-49)-log(x+7) Click here to see answer by jsmallt9(3296)

 Question 610802: Express this equation in logarithmic form. 4^0.5 = 2 Click here to see answer by jim_thompson5910(28548)
 Question 610802: Express this equation in logarithmic form. 4^0.5 = 2 Click here to see answer by fcabanski(874)

 Question 611250: what is this expression eqivalent to log(100x^3)? a: 2+ 3*logx B: 10*log(X^3) C:10*3logx D: 6*log x and can you show your work? Click here to see answer by stanbon(57290)

 Question 611503: Solve the equation 49^(3x+1)=7^(2x-5) Solve the equation log8(3x-1)=log8(x+4) Solve the equation log6(x)=(1/4)log6(16)+(1/3)log6(64) Find the antilogarithm of 1.5 Solve the equation ln(x)=5 Solve the equation 2^(2x+3)=3^(3x) Click here to see answer by lwsshak3(6490)

 Question 611562: -7log5 7n= -7 the 5 is the base Click here to see answer by nerdybill(6958)

 Question 611641: Approximate the value of log 49 base 12 by using log 3 base 12= 0.4421 and log 7 base 12= 0.7831 Click here to see answer by Alan3354(30993)

 Question 611655: Approximate the value of log 27/49 base 12 by using log 3 base 12=0.4421 and log 7 base 12=0.7831 Click here to see answer by Edwin McCravy(8904)

 Question 611672: solve 3log 6 base 4 - log 8 base 4 = log x base 4 Click here to see answer by stanbon(57290)
 Question 611672: solve 3log 6 base 4 - log 8 base 4 = log x base 4 Click here to see answer by solver91311(16877)

 Question 611679: solve 1/2 log 25 base 6 + log x base 6 = log 20 base 6 Click here to see answer by solver91311(16877)
 Question 611679: solve 1/2 log 25 base 6 + log x base 6 = log 20 base 6 Click here to see answer by lwsshak3(6490)

 Question 611687: Please help: I have solved this, but I'm unsure if it's right. ------------------ 1/2 log 25 base 6 + log x base 6 = log 20 base 6 --- log 25^1/2 base 6 + log x base 6 = log 20 base 6 --- log 5 base 6 + log x base 6 = log 20 base 6 --- 5+x=20 --- x=15 ----------- Did I do this right? Click here to see answer by lwsshak3(6490)

 Question 611682: solve: log 4 base 2 - log (x+3) base 2 = log 8 base 2 Click here to see answer by lwsshak3(6490)

 Question 611710: I need help solving: 2 log (x+1) base 4 = log (11-x) base 4 Click here to see answer by solver91311(16877)

 Question 611748: 2Log Y base 3 + 2Log X base 3= 4, find y in terms of x? Click here to see answer by jsmallt9(3296)

 Question 611944: how can you tell which is larger log 40 or ln 40? Click here to see answer by stanbon(57290)

 Question 611874: A radioactive substance has a half-life of 60 years. There is an accident that exposes a town with the radioactive substance. The area will be safe after 95% of the substance has decayed. How many years will that take? Click here to see answer by ankor@dixie-net.com(15647)

 Question 612024: What is the solution to the equation 2^x= 7 Plz help. Click here to see answer by jim_thompson5910(28548)

 Question 612022: What is the value of log2 64? Plz help. Click here to see answer by nerdybill(6958)

 Question 612025: If log2=0.30 and log3=0.48,what is the approximate value of log72 Plz help. Click here to see answer by nerdybill(6958)

 Question 612328: Which expression shows the expansion of ? A. B. C. D. Click here to see answer by nerdybill(6958)

 Question 612343: Whats is equivalent to logo(5)111? A.log(10)5+log(10)111 B.log(10)5-log(10)111 C.(log(10)5(log(10)111 D.log(10)111/log(10)5 I used (10) because I cant put log^10 going down. Click here to see answer by Alan3354(30993)

 Question 612384: given log b 2= 0.3562, log b 3=0.5646, log b 5=0.8271 and log b 11=1.2323 evaluate: log b 21 log b 161 log b 2310 Click here to see answer by vleith(2825)