Answer:
Step-by-step explanation:
X + (x + 1) + (x + 2) = 126
3x = 123
x = 41
So the sides are 41, 42 and 43
566,000,000
standard notation just means write the number out insted of in an equasion
Answer:
vertex = ( -6 , -3 )
focus = 
axis of symmetry = y = -3
directrix = x = 
GRAPH :
Frist we need to find the mean of both so
1.55
2.67
then we make a number graph and see how mant place does it take to get to them from 0 67and55/by them selfs = 1.2(rounded)
1.2 is you answer