Answer:
D. 34
Step-by-step explanation:
15+12=27
v-7=27
+7. +7
______
v=34
Let A be the event 
and B be the vent 
. Since the intersection of the events 
, the events A and B are mutually exclusive.
The number is either odd or even. Since 
, the events are mutually exclusive and exhaustive.
Correct choice is "the number is either odd or even".
Do you have the answers like A,B,C,D?
To find the area of this figure, there is two choices
1. cut it into 3 rectangles.
2.find the missing rectangle in the middle......
I likes 2 better $_$ :}
find the missing area in the middle, 12* 23 = 276
the area of the whole figure 31*69-276=1863m²
