.9564 from a z-score table
9 l + 7 s = 171
3 l + 5 s = 75 Multiply this equation by -3
-9 l - 15 s = -225 Add to top equation
- 8 s = -54 solve for s, the kg wt of small pkgs then use this value in one of the equations to compute l, the large pkg wt
B = 3x+8 we want 3 times this 3 (3x+8) = 9x + 24 equal to A = 5x-4
9x+24 = 5x -4
4x = -28
x = -7
Diameter is 2 times the radius so radius is 1/2 x d = 1/2 x 4.75 inches
Circumference = pi X d = pi x 4.75 inches
5 min would be 5 x 3 = 15 rotations (three per minute)
15 rot x 56 ft x pi / rot = 15 x 56 x pi = ........ ft
2/ 9 * 27 = 2*27 / 9 = 6
Brain f**t.....didn't really recall answering that one before ! Haha
The mean (which is the average of all 4 scores) will likely DECREASE since A put in a lower score (if the other scores do not change).
The median (which is the middle of the list scores..... or the average of the two middle scores if their is an even number of entries in the list ) won't change as A is already an outlier and does not change.
'Convert' the equations to y = mx + b form m = slope if the slopes are the same then the lines are parallel
first one y = 5x + 1 is already in y = mx+ b form slope = 5
can you do L2 ? to see if slope = 5 .... HINT: divide both sides of the equation by 2
Split the 'leftover' distance
(26 1/3 - 10 1/4 ) / 2 = ..........
