Math
posted by Thanh .
What is the probability that x^2+7x+k will factor if k is greater or equal to zero and less than or equal to 20, considering k is an integer.
How do I do this?

Basically, let k=1,2,...20 and try to factor all of the 20 cases. See which one factors and divide the factorable cases by 20 to get the probability.
On the other hand, we know than to factor, k must have two factors that add up to 7, such as 1*6,2*5,3*4...
I'll let you work from here.
Respond to this Question
Similar Questions

Probability
Check my answers, thanks! Roll 2 dice. What is the probaility of rolling and getting: A) a sum less than or equal to 6 = 15/36=.42 B) sum of greater than or equal to 10 = 6/36=.60 C) difference of less than or equal to 1 = that can't … 
AlgebraCorrection?
Solve x^2 3x is greater than or equal to 10 Would the solutions be x=5 and x= 2? 
math
sketch the feasible region for this system of the inqualities and find the coordinates of each vertex:y greater than or equal to 1;x less than or equal to 2; 1x+2y less than or equal to 6;1x+2y greater than or equal to 2 
Rational Inequality with Absolute Value
Here's a question I'm having trouble with: x/x+2<2 Solve for x. I'm trying to use the case method to solve this problem. Basically I just need confirmation that I did this correctly. I'm doing this through distance learning … 
math
State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test the following statements. (a) The linear correlation coefficient is positive. Ho: ñ Select not equal to equal to greater than less … 
Math
Hi everyone, my name is Emerson. I was wondering if anybody could help me on a test. I'm stuck on some, but I think I know some others. Thank you! 1. Translate the phrase "nine more than two times a number" in to an algebraic expression. … 
Math
Which is equivalent to the inequality shown below? 
math
7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at $2.25 each to meet that goal? 
Math
What is the solution to the nearest tenth to the equation below? 
math
please check my work. 1. The number of words (x) Tina can type per minute is at Least 50. write and graph and inequality. (I broke it down to these 2 choices because the A & D was incorrect) B. x is less than or equal to 50 C. x is …