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math
An experiment consists of rolling a weighted die. The probability of rolling each number is: Pr[1]=0.2 , Pr[2]=0.15 , Pr[3]=0.25 , Pr[4]=0.15 , Pr[5]=0.05 , and Pr[6]=0.2 . On the first roll, you record if the number is Small
asked by Nahla on March 27, 2009 
chemistry
The definition of pH is: pH = log 10[H^+] what is the defintion of the [OH^]... is it pOH = log 10[OH^]? Yes!! pH =  log10 anything. pKa = log Ka Pkb = log Kb pKw = log Kw = 14 PKsp = log Ksp (solubility product) and so
asked by Mary on January 22, 2007 
Calculus
Find the inverse of each relation: y = (0.5)^(x+2) and y = 3log base 2 (x3) + 2 For the first one I got y=log base 0.5 (x+2)...but the answer in the back of the textbook says that it is not x+2, but x2. Can someone tell me why
asked by Raj on May 6, 2007 
Algebra 2
solve for x: 3^2x+3=7^x+1 I did 2x+3=log0f3(7)+ logof3(7) (2log of 3(7))x=log of 3(7)3 x=log of 3 (7)+log of 3 (3^3)/log 0f 3 (3^2)log of 3 (7) x=log of 3 (71/3^3)/log of 3(9/7) log of 3(7/27)/log of 3(9/7) answer log of
asked by sara on March 3, 2019 
math
Logarithm!!! Select all of the following that are true statements: (a) log(2x) = log(2) + log(x) (b) log(3x) = 3 log(x) (c) log(12y) = 2 log(2) + log(3y) (d) log(5y) = log(20y) – log(4) (e) log(x) = log(5x) – log(5) (f) ln(25)
asked by Simon on April 16, 2010 
MATH!
An experiment consists of rolling a weighted die. The probability of rolling each number is: Pr[1]=0.05, Pr[2]=0.1, Pr[3]=0.25, Pr[4]=0.25, Pr[5]=0.2, and Pr[6]=0.15. On the first roll, you record if the number is Small (1,2) or
asked by Chloe on February 24, 2016 
Math
Find the domain of definition of function f(x) given by f(x)= log base4{log base5(log base3(18x  x^2  77)}
asked by Shahswat on September 27, 2016 
Mathematics
Prove that log a, log ar, log ar^2 is an a.p. Is the following below correct? Log ar^2  Log ar= Log ar  Log a hence applying laws of logarithm Log(ar^2/ar) = log(ar/a) Log and log cancels out and then crossmultiply hence a^2r^2
asked by Anonymous on July 15, 2009 
Chem
Look on your calculator. You know the definition of pH. It is pH=log(H^+). Well, we have the same thing in pKa, pKb, pOH, pKw, etc etc. pKsp = log Ksp. Punch 57.685 into the calculator. Now change the sign to make it negative.
asked by DrBob222 on February 27, 2007 
Math
The problem 8^x = 16^x+2 the choices a)8 and b)8. Help please! Given that information I want to say the answer is 8 ? where is the 2. Use parentheses. Is it 16x+2 or 16x+2 The 2 is part of the exponent. Take the log of both
asked by Kellie on January 16, 2007