Answer:
Step-by-step explanation:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
6x + ( 3x - 9) = 90°( being complementary angles )
6x+3x -9 = 90°
9x = 90° + 9
x = 99 / 9
x = 11
Distribute 2 to 3t and 4, and 6 to t and 2
2(3t + 4) = 6t + 8
6(t + 2) = 6t + 12
Combine like terms:
6t + 8 + 6t + 12 = 12t + 20
12t + 20 is your answer
hope this helps
Answer:
to get coordinate of mid point use (20+0)/2 for x coordinate,
A is correct answer!
