N=2.98+4.6
n=7.58
I think this is correct
Answer:
Step-by-step explanation:
Let and be independent random variables representing the lifetime (in 100 hours) of Type A and Type B light bulbs, respectively. Both variables have exponential distributions, and the mean of X is 2 and the mean of Y is 3.
Answer:
(x,y)=(3/2, -1/2)
Step-by-step explanation:
2x+4y=1 /*3
3x-5y=7 /*(-2)
6x+12y=3
-6x+10y=-14
...........................
/ 22y=-11
y= -11/22
y= -1/2
2x+4*(-1/2)=1
2x-2=1
+2 +2
2x=3
x=3/2
so the solutionis (x,y)=(3/2, -1/2)
Hello,
The answer to this question would be B. A right scalene triangle is a "Triangle" that has a right angle into it.C would not be the answer b/c is has an obtuse angle,and So does D. So the answer is not D,So dont pick D b/c I see that you have it marked.
Hope this helps
