Tuesday
September 2, 2014

Posts by vilma


Total # Posts: 29

math
a fair of die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive?
October 27, 2012

math
Suppose the income (in tens of thousands of pesos) of employees at University X can be approximated by a continuous distribution with density f(x) = ( 2x􀀀2; if x  2 0; if x < 2 Find the probability that a randomly chosen employee has an income between P30,000 ...
October 26, 2012

math
A class of college freshmen is composed of 110 students. Among these students, 75 are taking English, 52 are taking history, 50 are taking math, 33 are taking English and history, 30 are taking English and Math, 22 are taking History and Math, and 13 are taking all three ...
October 26, 2012

math
Suppose the income (in tens of thousands of pesos) of employees at University X can be approximated by a continuous distribution with density f(x) = ( 2x􀀀2; if x  2 0; if x < 2 Find the probability that a randomly chosen employee has an income between P30,000 ...
October 26, 2012

math
A class of college freshmen is composed of 110 students. Among these students, 75 are taking English, 52 are taking history, 50 are taking math, 33 are taking English and history, 30 are taking English and Math, 22 are taking History and Math, and 13 are taking all three ...
October 26, 2012

math
Determine whether each of the following statements is true or false. Justify your answer. (a) x 2 fxg (b) fxg  fxg (c) fxg 2 fxg (d) fxg 2 ffxgg (e) ;  fxg (f) ; 2 fxg 2. 4 pts. Consider the experiment of rolling two distinguishable fair dice. Let A be the event ...
October 26, 2012

math
Suppose the income (in tens of thousands of pesos) of employees at University X can be approximated by a continuous distribution with density f(x) = ( 2x􀀀2; if x  2 0; if x < 2 Find the probability that a randomly chosen employee has an income between P30,000 ...
October 26, 2012

math
a fair die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive.
October 26, 2012

math
Let x be the standard normal random variable. find the following: a)P(0)<x<1.42) b)P(-0.73<x<0) c)P(-1.37<x<2.01) d)P(x>1.13)
October 26, 2012

Chemistry
how many grams of ethylene (C2H4) are required for the complete reaction of 31.7 grams of hydrogen gas?
October 1, 2012

Algebra
I posted this question earlier incorrectly: I could still use some help figuring it out. A student deposits $6,000 in a savings account with 6% continuously compounded interest. How many years must he wait until the balance has doubled?
June 27, 2012

algebra
This is a problem about logarithms: I'm completely confused as to what to do here: The logarithmic form of 84 = 4,096 is log8 4,096 = 4 Write the logarithmic form of x5 = the value of this quantity Explain the steps of conversion.
June 26, 2012

Algebra
I have no idea how to even begin writing this out. I need help desperately. A student deposits $6,000 in a savings account with x% continuously compounded interest. How many years must he wait until the balance has doubled?
June 26, 2012

Algebra
Find two consecutive odd numbers that add to 208, when the smaller number is added to five times the larger number.
June 19, 2012

Algebra
I need help doing this problem, should I not get the same answer with each technique? Please help. What three techniques can be used to solve a quadratic equation? Demonstrate these techniques on the equation: 2x² + 3x + 1 = 0
June 17, 2012

Algebra
I'm having a problem dividing 2x^3 - x^2 + 3x -1) ÷ (x + 2)
June 17, 2012

Algebra
Pulling my hair, need help! For the systems of linear equations in questions the following questions: Determine how many solutions exist Use either elimination or substitution to find the solutions (if any) 4x = 8 and 5y = 15 0.2x + 0.4y = 1.7 and 8.3x - 6.3y = -4.3 x/3 - y/5...
June 10, 2012

Algebra
I have major issues with problems like these,please I need help. For these systems of linear equations in questions -Determine how many solutions exist -Use either elimination or substitution to find the solutions (if any) 1. y = 2x + 3 and y = -x - 4 2. 2x + 3y = 8 and 3x + ...
June 10, 2012

Algebra
calculate the slope, x-intercept, and y-intercept for 4.2x + 3.8y = 1.9
June 5, 2012

Algebra
calculate the slope, x-intercept, and y-intercept for 3x = -2
June 5, 2012

Algebra
A temperature of 30 degrees F is equivalent to 271.89 degrees K, while a temperature of 94 degrees F is equivalent to 307.44 degrees K. Find the equation converting Kelvin temperature to Fahrenheit. What is the Fahrenheit temperature when it is 212 degrees K?
June 3, 2012

Algebra
Find an equation in slope-intercept form passing through the points (-10, 23) and (6, -11).
June 2, 2012

Algebra
The final grade for a particular course is calculated by dividing total points earned by total points available. There are 120 points available in the first half of the course, and 140 points in the second half of the course. If a student earns 81% in the first half of the ...
May 28, 2012

Algebra
The area of a rectangle is 48 square cm. If the length is 8 cm greater than the width, what are the dimension of the rectangle?
May 26, 2012

Algebra
A man buys four DVDs for $75.68, including 6% sales tax. How much did each DVD cost?
May 26, 2012

Algebra
Solve the quadratic equation by the square root property (2x - 1)2 = 25
May 26, 2012

Algebra
ABC phone company charges $16 per month plus 8¢ per minute of phone calls. XYZ phone company charges $10 per month plus 11¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?
May 26, 2012

Algebra
ABC phone company charges $16 per month plus 8¢ per minute of phone calls. XYZ phone company charges $10 per month plus 11¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?
May 25, 2012

Math
how could you find the measurements of the frame with a 16 inch perimeter antd the greatest possible area?
March 10, 2011

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