N-2,n and n+2;n-3,n and n+3,n-4,n and n+4....
Answer:
9 rows x 6 columns = 54 people.
Step-by-step explanation:
9 rows and 6 columns.
So there must be 9 rows of people, and each row is 6 people deep. (That is how they get the columns! Duh!)
9 x 6 = 54 people
Answer:
x = 40
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Consider the triangle on the left and calculate the third angle
Subtract the sum of the 2 angles from 180
third angle = 180° - (75 + 50)° = 180° - 125° = 55°
Consider the triangle on the right
The third angle = 55° ( vertical angles )
Subtract the sum of the 2 angles from 180
x = 180 - (55 + 85) = 180 - 140 = 40
