the answer is 10:20.
Hint for the future: be sure to write in the full problem. I only knew the answer because I had to do it myself, but people need more context if they are going to help you.
Step-by-step explanation:
BC = AD (opposite sides in parallelogram is equal)
x + 8 = 2x + 1
8 - 1 = 2x - x
7 = x
x = 7
BC = x + 8 = 7 + 8 = 15
Answer:
x = 3
Step-by-step explanation:12x+9=45
Subtract 9 from both sides
12x=36
Divide both sides by 12
x=3
Answer:
4m² + 6mn - 2n²
Step-by-step explanation: