8+2=10 6-2=4
To find the mean (or average) you first add up the numbers you have. NOTHING 1.88
You could break down the corresponding elements. So you could add the 600 and the 200 giving 800. You could then add the 90 and the 2, giving 92. Then add the 800 and the 92, giving 892.
Sum = 79*(79+1)/2 = 79*80/2 = 3160
98
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8+2=10 6-2=4
To find the mean (or average) you first add up the numbers you have. NOTHING 1.88
You could break down the corresponding elements. So you could add the 600 and the 200 giving 800. You could then add the 90 and the 2, giving 92. Then add the 800 and the 92, giving 892.
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Sum = 79*(79+1)/2 = 79*80/2 = 3160
98
You find the midpoint of a line segment by dividing its length by two. If you are given two sets of 'x' and 'y' coordinates as the endpoints of the segment on a graph, then you need to use the formula [X1 plus X2]/2, [Y1 plus Y2]/2 to find the coordinates of the midpoint.
x^5+x^4+7x^2+x-2
You use Plus as a symbol in Maths. Example, 2 Plus 2 equals 4. Or in symbols it would be 2+2=4. __________________________ Plus = + Equals = = (Equals equals =)
1 x 7 plus 2 x 7 is the same as 3 x 7