Answer:
c rectangle I'm pretty sure
First you add 11+4 which equals 15 then you add 15+9 which equals 24. So Sandra sees 24 flags
Answer:
45
Step-by-step explanation:
The three angles of a triangle add to 180 degrees
3x+5x+4x = 180
Combine like terms
12x = 180
Divide by 12
12x/12 =180/12
x = 15
The smallest angle is 3x
3(15) = 45