3 is the deviation of the set of data
Im assuing the 0.6 is a percentage and not the number of passes then :
100% - 60% = 40%
9514 1404 393
Answer:
(a) -4 1/12
(b) -7/12
Step-by-step explanation:
We can convert these numbers to ones with a denominator of 12. This will facilitate the arithmetic.
2 1/3 = (6+1)/3 = 7/3 = 28/12
1 3/4 = (4 +3)/4 = 7/4 = 21/12
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Then the sum and difference are ...
(a) -28/12 -21/12 = -49/12 = -4 1/12
(b) -28/12 +21/12 = -7/12
Easy 3+9= 12
7+4=11
And yeah 10 that’s it
By looking at the formula you can see that the quadratic part is 0 if you fill in x=3 (you know, 3-3 = 0). The outcome of the formula then becomes y= 0+5.
That gives us point (3,5) as the top of the parabola. So there you go, answer A.