Answer:
a=2 and b=2...............
The internal angle sum of a quadrilateral is :
C. 360°
The sum of internal angles of a polygon is determined by a formula :

where n represents number of sides.
In a quadrilateral there are four sides,
So, plugging 4 in the formula :
_____________________________

Answer:

Step-by-step explanation:





Answer:
A
Step-by-step explanation:
A is the only equation that does not account for the fact that Tu bought 2 tickets and 2 drinks.
The rest do: B subtracts the appropriate amounts twice, C multiplies the doubled expenses, and D does the same, just the amount paid is also separated.
Answer:
b
Step-by-step explanation:
because there only allowing the first 50 to register that would be a contest