Part A: D) x is positive, y is negative.
Part B: C) both x and y are negative.
Part A:
P' is found by rotating P 90° counterclockwise about the origin. This makes the coordinates (x,y) transform to (-y,x). Thus (-2,-1) maps to (1,-2).
Part B:
Q'' is found by rotating Q 90° counterclockwise about the origin, then reflecting across the x axis. This makes the coordinates (x,y) first transform to (-y,x), then makes the new y-coordinate the opposite sign. Thus (1,2) first maps to (-2,1), then to (-2,-1).
Because RS is perpendicular to ST so the slope of line ST is -
If Mrs. Lapp gave 4 children 1/8 of a cake each, then that means that she gave 4/8 of a cake out in all.
4/8 can be reduced to 1/2.
Mrs. Lapp gave out 1/2 of her cake to the children.
Hope that helped =)
5, 7, 7, 8, 10, 11, 12, 15, 17. Q1 = 7, Q2 = 11, Q3 = 15 Q1 = 7, Q2 = 10, Q3 = 13.5 Q1 = 6, Q2 = 9, Q3 = 12 Q1 = 7.5, Q2 = 10.5,
vovikov84 [41]
Answer:
Step-by-step explanation:
Given
5, 7, 7, 8, 10, 11, 12, 15, 17.
Required
Determine Q1, Q2 and Q3
The number of data is 9
Calculating Q1:
Q1 is calculated as:
Substitute 9 for N
This means that the Q1 is the mean of the 2nd and 3rd data.
So:
Calculating Q2:
Q2 is calculated as:
Substitute 9 for N
Calculating Q3:
Q3 is calculated as:
Substitute 9 for N
This means that the Q3 is the mean of the 7th and 8th data.
So: