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Algebra
Use the quadratic formula to solve the equation. Give exact answers. 2x^2 + 11x  21 = 0 a) 3/2, 7 b) 3/2, 7 c) 3/2, 7 d) 3/2, 7 I could not get any of these answers.
asked by Cassie on June 6, 2009 
statistics help
Complete the hypothesis test with alternative hypothesis ƒÊd ‚ 0 based on the paired data that follows and d = O  Y. Use ƒ¿ = 0.01. Assume normality. Oldest 188 174 192 196 65 Youngest 186 168 199 199 69 (a) Find t. (Give
asked by tracy on June 24, 2013 
probability
Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)=  unanswered fX(eyy) fX(ln yy) fX(ln y)y none of the above When fX(x) = {1/3,0,if
asked by janki on March 30, 2015 
math (cant figure it out)
How to find the surface area of a cylinder with a diameter of 6ft and a height of 20cm using 3.14 rounded to the nearest whole number. (I cant figure it out my book doesn't give an example of it just a radius formula and ive tried
asked by luna on March 15, 2014 
probability
The PDF of exp(X) Let X be a random variable with PDF f_X. Find the PDF of the random variable Y=e^X for each of the following cases: For general f_X, when y>0, f_Y(y)= f_X(ln y)  y When f_X(x) = {1/3,0,if −2
asked by RVE on March 26, 2015 
Math, statistics
Problem 1: The PDF of exp(X) (6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= Solution: f_x(ln(y))/y When fX(x) =
asked by R on March 31, 2015 
Algebra math1
Find the formula 42 reversed is 24 2+4 = 6. The difference between 42 & 24 is 18, 2 + 4 = 6. 18 x 2 = 36, 36 + 6 = 42, 18 + 6 = 24. I need to find a formula that would've found the answers 6 & 18 before I knew they were the
asked by Shanu on January 25, 2015 
Math
Can you check my work Please? Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000 1. Write down the formula for N(t) using the
asked by Walt on February 14, 2012 
math
The triangular numbers are the numbers 1, 3, 6, 10, 15, . . .; the square numbers are the numbers 1, 4, 9, 16, 25, . . . The pentagonal numbers 1, 5, 12, 22, 35, . . .. The geometrical language is justified by the following
asked by jeep on April 1, 2010 
math help
Can some one help me with this one??? Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper.
asked by Tom614 on June 11, 2013