X^2-9=0 add 9 to both sides
x^2=9 take the square root of both sides
x=±3
4u+3c-6 is thats what its asking for? just puting the same variables together
The probability of getting the correct order in the spelling bee is 1 chance in 362,880.
This is a permutation problem. Our goals is to find the total number of ways that the 9 students can be ordered.
For the first spot there are 9 choices, then 8 choices, then 7 choices....
We need to evaluate:
9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 362,880
Another way to write this is: 9!
Answer:
since the lines don't intersect there is no solution.
