Answer:
Change the angle measures to 90°
Step-by-step explanation:
A rhombus (which is what you have as you marked the edges congruent) has the diagonals perpendicular. Therefore, you need to change the angle measures to 90°
Y=4+8
3.
15 - 12 = 3.
The ends of the box are the lower and upper quartiles.
The difference upper - lower = the interquartile range.
Half of 138 is 69 o-o
Round 10.5 to 11