The mean of a set of values is the sum of the data divided by the number of entries. So in this case:

Solve for x:
55 + 67 + 56 + 49 + x = 5(55)
227 + x = 275
x = 48
The answer is 48 miles.
<span>The side opposite the 30 degree angle is half of the hypotenuse.
a^2 + b^2 = c^2 =>
a^2 + (c/2)^2 = c^2
12^2 + c^2/4 = c^2
4*12^2 + c^2 - 4c^2 = 0
576 - 3c^2 = 0
- 3c^2 = - 576
c^2 = 192
c = 8√3
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So with standard deviation, the greater it is the greater the spread is.
Since distribution 3 has the greatest standard deviation, it has the greatest spread.
You can multiply the fraction by any number you want so the new fraction gonna be equivalent to your fraction like : (4 × 2)/(5 × 2) = 8/10 or (4 × 3) / ( 5×3) = 12/15 so 4/5 = 8/10 = 12/15 :))
i hope this be helpful
have a nice day
Simple.....
you have

to find what a is....simplify/multiply both sides....

simplifying it too....
18=7a


Thus, your answer, C.