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Tutors Answer Your Questions about logarithm (FREE)
Question 175313: I need the help on Log
Use the properties of logarithms to find the exact value of the expression.
log 21-log 7 the 3's are lower by the G's like an exponent but bottom...
3 3
I came up with the answer 1 is that correct?
log(4+x)-log(x-5)=log2 I cant find the answer as well.Uhgg
I do not have these in my book...Help
Click here to see answer by nerdybill(2446)   |
Question 175448: I cant find these again.....I am stuck...Can someone help me
Here is the problems and I have been at this since this morning on these..HELP
These are not in the book and I have to get this finished...Please Desparate
Write as the sum and /or difference of logs. Express powers as factors.
16. In (x+8)(x-9)^3/2 / ((x-4)^4 , x>9
The choices are :
A. 3/2In(x+8)+3/2In(x-9)-6In(x-4)
B. In(x+8)+In(x-9)+In3-12In(x-4)-In2
C.3/2In(x^2+17x-72)-6In(x-4)
D.3In(x+8)-2In(x-9)-6In(x-4)
17. In (5x)11thpowersqr1-2x/(x-3)^9 ,x>3
The choices are:
A. 5Inx+2/11In(1+2x)-9In(x-3)
B. In 5+In x-11 In(1+2x)-9In(x-3)
C. In 5 + In x +1/11 In(1+2x)-In 9 - In (x-3)
D.In 5 + In x + 1/11 In (1+2x)- 9 In (x-3)
For the given functions F and G, find the requested composite function value.
18. f(x)=sqrtover x+3; g(x)=2x; Find (fog)(2)
The choices are:
A. 2sqrt10 B. sqrt10 C. 2sqrt5 D. sqrt7 I dont know how to plug on the computer a symbol of a sqrt?
19. F(x)=2x+2;g(x)=4x^2+3;Find (g°g)(3)
The choices are:
A. 6087 B. 18 C. 80 D. 259
Find the indicated composite for the pair of functions.
(f ° g)(x): f(x)=1/(x-8), g(x)=8/3x
The choices are:
a. 1x/8-24x b. 3x/8-24x c. 8x-64/3x d.3x/8+24x
Find the domain of the composite function of f ° g.
f(x)=x+2; g(x)=8/x+4
The choices are:
a. {x⌡x not equal-6}
B.{x⌠x not equal -4, x not equal -2}
C.{x⌡x is not a real number}
D. {x⌠x not equal -4}
There is a up and down straight line between the X's...I do not know what symbol to key in for this...
Find the indicated composite for the pair of functions.
(f ° g) (x): f(x)=5/x-8, g(x)=8/3x
The choices are:
A. 15x/8-24x b. 5x/8-24x c. 15x/8+24x d. 8x-64/15x
Find the Inverse function of F. State the domain and range of F.
F(x)=3x-2/ (x+5)
The choices are:
A.f^-1(x)=5x+2/3-x;domain of f:(x/x not equal -5};range of f{y/not equal 3} between the x's they are up and down straight lines........
B. f^-1(x)=3x+2/x-5;domain of f;{x/x not equal -5};range of f:{y/y not equal 5}
C .f^-1(x)=x+5/3x-2;domain of f:{x/x not equal -5}; range of f {y/y not equal 2/3}
D. f^-1(x)=5x+2/3+x;domain of f:{x/x not equal -5}; range of f: y/y not equal -3}
Please Help..I am tearing my hair out with these.....
Click here to see answer by solver91311(5072)  |
Question 176127: Paul borrowed $90 from Greg eight months ago. Today, Paul paid Greg back $102.60. What is the simple annual interest rate that Paul paid?
..will u SOLVE this pLz?!.
..wit solutions and graph?,
..i need to solve dis..but i ddnt know how.
..pLz!.
..thAnks in advanCe!.
Click here to see answer by vleith(1977)  |
Question 176289: I am havin a hard time learning how to "aproximate a logarithm to the nearest thousandth" I have a problem that is log(base 5) of 9 and all I did was divide 9 by 5 two times since that got me to one.actually, .36. but i dont think I even did that right. please help
Click here to see answer by Alan3354(6059)  |
Question 177141: A major component of gasoline is octane. Octane has a vapor pressure of 13.95 torr at 25 degrees Celsius and a vapor pressure of 144.78 torr at 75 degrees Celsius. Use these data to calculate: (a) the heat of vaporization of octane; (b) the normal boiling point of octane; (c) the vapor pressure of octane at -30 degrees Celsius.
Click here to see answer by solver91311(5072) |
Question 177444: Hopefully I've submitted this in the right place to transform a logarithmic expression.
Express log x 4/9 in terms of log x 3/2
I worked it out through guesswork as, -2 log x 3/2, but can anyone explain the answer and if this is correct.
Thanks
Click here to see answer by stanbon(26255) |
Question 177444: Hopefully I've submitted this in the right place to transform a logarithmic expression.
Express log x 4/9 in terms of log x 3/2
I worked it out through guesswork as, -2 log x 3/2, but can anyone explain the answer and if this is correct.
Thanks
Click here to see answer by solver91311(5072) |
Question 178354: You have $500 in your savings account. Suppose you have a choice of keeping your money for five years in a savings account with a 2% interest rate, or in a five year certificate of deposit with and interest rate of 4.5%. Calculate how much interest you would earn with each option over five years time with continuous compounding.
Click here to see answer by EMStelley(143) |
Question 178353: You have $760,000 in your bank account. The interest rate in your account is 5%. Solve for the following:
a. How much interest will you accumulate if interest is compounded annually over the next five years?
b. How much interest will you earn in your account over the next five years with continuous compounding?
Click here to see answer by EMStelley(143) |
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