X. 23%
___. ____
640. 100
640•23=14,720
100•x=100x
14,720=100x
___________
100. = 100
___________
147.2. = x
X=147.2
147.2%
Answer:
c
Step-by-step explanation:
look it up.................
Please try to be more specific. What I think you meant was "what is the area under the standard normal curve to the left of 2.6 standard deviations above the mean?" If that's it, the area can be found from a table of z-scores (look for z=2.6) or by using a calculator:
normalcdf(-100,2.6) = 0.995.
X = 107
a straight line is 180 degrees and we are given one angle so just do 180-173.