Step-by-step explanation:
A) opposite sides in a rectangle is always equal
B) 9x+12 = 4x +47
Transpose = 9x - 4x = 47 - 12
solve = 5x = 35
Divide both sides by 5
x = 7
Answer:
the answer is 2..............
Answer:

Step-by-step explanation:
(11)²=(6)²+ (y)²
121=36 +(y)²
y² =121 –36
y²=85
