Answer:
7
Step-by-step explanation:
49 divided by 7 = 7
x = 7
32.8
C^2 - B^2 = A^2
34.6 ^2 - 11^2 = A^2
1197.16 - 121 = A^2
1076.16 = A^2
25x^2 + 30x + 9