Often, variability is most usefully expressed in the same units as the original data. That's what <em>standard deviation</em> (square root of variance) does. In situations where that is the case, the variance is useful only for getting to the value of standard deviation.
The value of x is 5.5. I got this answer by first distributing -3 amongst (x-11), and distributing 7 amongst (2x-5). Next I combined like terms and subtracted 3x from 5x, and added -35 and 2. Next I subtracted 33 from both sides. Next I subtracted 14x from both sides. And finally I divided both sides by -12 to get the final answer of 5.5.
Total number of friends = 3
Let the fare be = $ J
As it is equally divided, each friend has to pay 
amount
Angela paid $5 additional as tip so her share is 
Hence,Angela paid $ in total.
11 x 3 3/4 = 41 1/4 (41.25)
10 1/2 x 0.55 = 5.775
41.25 + 5.775 = 47.025
100 - 47.025 = $52.975 her change
Hope it helps!
Answer:
If two planes intersect, then their intersection is a line. A line contains at least two points. If two lines intersect, then exactly one plane contains both lines. If a point lies outside a line, then exactly one plane contains both the line and the point.
