21x-9+63=180
21x+54=180
21x=126
x=6
Answer:
the second one would be the answer
Answer:
P≈28.28cm
d = Diagonal 10cm
Using the formulas
P=4a
d=2a
Solving for P
P=22d=2·2·10≈28.28427cm
Step-by-step explanation:
Altogether that's $120 dollars so that's how much u need
Answer is B. It isn't going up or down on the y axis