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Tutors Answer Your Questions about logarithm (FREE)
Question 194623: i dont understand how to express a prob;em in terms of sums and differences of logarithms . I need help with this ln of the fourth root of ab squared and i need help expressing 3 log base b of x-4logbaseb y+ (1/2)log base b of Z
Click here to see answer by RAY100(1637)   |
Question 195269This question is from textbook
: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? Here is the answer, I was told I have a typo in it, cannot find it.
Growth Formula
A(t)=Ao(2)^(t4) where t is the number of minutes after t=0
A(300)= 1*2^(300/4)
A(300)=2^(75)
A(300)= 3.77x10^22 cells
ThanksThis question is from textbook
Click here to see answer by stanbon(26255) |
Question 195269This question is from textbook
: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? Here is the answer, I was told I have a typo in it, cannot find it.
Growth Formula
A(t)=Ao(2)^(t4) where t is the number of minutes after t=0
A(300)= 1*2^(300/4)
A(300)=2^(75)
A(300)= 3.77x10^22 cells
ThanksThis question is from textbook
Click here to see answer by Edwin McCravy(2920) |
Question 195268This question is from textbook
: STANBON You helped me with this problem:
The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite? I already have the answer, but need to know
What does Ao represent? Do you know what the value of Ao? What does t represent? What are the units of t? Thanks!
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A(t) = Ao*(1/2)^(t/2*10^6)
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0.086Ao = Ao*(1/2)^(t/(2 million))
(1/2)^(t/2 million) = 0.086
Take the log to get:
(t/2 million) = log(0.086)/log(1/2) = 3.53951953
t = (2 million)*(3.53951953)
t = 7,079,039.06This question is from textbook
Click here to see answer by stanbon(26255) |
Question 195267: Log x^5=27, x=.......?
first u must plug the Logarithm back into exponential form... which is b^x=y (if u dont know the equation for the log it is log b^y=x)
that would then make the equation X^27=5
the you would take the 27 root of 5 and that with give you x
which should equal 1.06142125 which rounded is 1.1
Click here to see answer by atlantasvolleyball(2) |
Question 195277This question is from textbook
: Can someone show me how to graph these, they are supposed to be graphed on the same graph, and justify your answer. thanks
y = 4x (x should be above the 4)
y = log4x (x xhould be below the 4)This question is from textbook
Click here to see answer by mersha(8) |
Question 195709: I can't show what the power is so i'll just say to the ___ power.
3 to the x+2 power = 5 to the x-1 power. I'm not sure how to do it when there are x's on both sides and they normally cancel out in previous problems.
Click here to see answer by stanbon(26255) |
Question 195857: My worksheet im working on is about Logarithmic Functions. All it says is to "solve". My problem is 3 to the power of 1+3x = 5 to the power of 1+x. idk how to write it out on the computer so i just wrote to the power of.
Click here to see answer by vleith(1977) |
Question 195908: How can you solve 6^x+2=3^x+1 with out the calculator? I think you really can't because I tried it with the calculator and x comes out to be -3.584... so then the exponent would be a negative number...so I can't use logs.
Click here to see answer by stanbon(26255) |
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