Let's 1st start with the 'Mean": We know that t<span>he </span>mean<span> is the average of the numbers: a calculated "central" value of a set of numbers. To calculate: Just add up all the numbers, then divide by how many numbers there are. </span> So in this Case, the mean of these number would be 29.7 because we added all of the number's and divided them by 7, which is how many numbers there are in total.
Now, What is the "Median"? Well, to find the median, we know that we have to<span> place the numbers we are given in value order and find the middle number. Example: find the </span>Median<span> of {13, 23, 11, 16, 15, 10, 26}. ... The middle number is 15, so the </span>median<span> is 15. (If there are two middle numbers, you average them.)
</span>So in this Case, the "Median" of these numbers would be "28" because we ordered all of the numbers like this: 11, 12, 25, 28, 34, 42, 56 and found the middle number which was "28".
Now, what is the "Mode" of all of this? Well, to find the mode, we know that it's t<span>he number which appears most often in a set of numbers. Example: in {6, 3, 9, 6, 6, 5, 9, 3} the </span>Mode<span> is 6 (it occurs most often). </span> But in this case, there is "NO" mode because there is no number repeated as seen above.
4b+5a=2.50 10b+3a=3.40 You multiply the equations by the variables so they can cancel out. For example the first one by 3 and the second by 5 so you have
12b+15a=7.50 50b+15a=17 Subtract them and end up with
-38b=-9.5 solve: b=0.25, substitute b in any equation and get a=0.30 Hope this helped
26/25 aka 1 1/25 explanation the first drawing has 11 shaded out of 25 11/25 The second one has three out of 5 5 times 5 is 25 3 times 5 is 15 there fore it would have 15 shaded out of 25 15/25 and 15/25 plus 11/25 is 26/25
Angle of depression is the angle that is created below the horizontal with your line of sight. to solve the angle of depression, use the formula: tan(d) = o / a where d is the angle of depresion h is the opposite side of the angle which is the height 60 ft a is the adjacent side of the angle which is 25 ft
tan( d ) = 60 / 25 d = arctan ( 60 / 25) d = 67.38 degrees