Answer:
A (first picture)
Step-by-step explanation:
Based on the picture, the lines are both perpendicular and the red line splits AB into two equal parts (bisects it), so it must represent the perpendicular bisector of AB.
You can get the number by dividing 19.2 by 0.40
The number is 19.2/0.40 = 48
Answer:
912m
Step-by-step explanation:
There are two triangles.
The height of the triangles are 16m and the base is 12m.
Multiply 12(16)/2 to get the area of the triangle.
The area of the triangle is 96m.
Multiply 96 by 2 to get 192.
There are three rectangles.
Height is 20m and the base is 12m
20(12) is 240. Then, multiply by three.
240(3) is 720.
Add 192 and 720 to get 912m.
Hope this helps! Comment if I did something wrong.
Answer:
0.29
Step-by-step explanation:
We are given that there are 4 couples i.e. 8 people
They decide to play as teams of two and to select the teams randomly
Now we are asked How likely is it that every person will be teamed with someone other than the person he or she came to the party with
For people 1 , there are 6 options for pairing Since he or she cannot pair with his /her own partner
So, Choices For people 1 will be 6 person
So, Probability that person 1 will be teamed with someone other than the person he or she came to the party with = 
So, Probability that every person (=8 person) will be teamed with someone other than the person he or she came to the party with =
Hence Probability that every person will be teamed with someone other than the person he or she came to the party with is 0.29