B AA
5452503156
to 1219
+4
6
18
10
12
Which proportion can be used to show that the slope of AC is equal to the slope of DF?
A.
6-(-3)
-7- (-3)
-3-(-9)
5 - 13
B.
6 - 3
-7 - (-3)
-3-(-9)
5 - 13
C.
6-(-3)
-7 - 3
-3 -9
5 - 13
5
D.
6 - 3
-7 - 3
-3 -9
5 - 13

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Evaluate cos2θ for cosθ = square root of 3/2

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above