Answer:
3x+9=180(angles on a line
3x=180-9
3x=171
x=171/3
x=57
16 length height bc it’s a triangle so the triangle will be 17 feet tall and long
Answer:
1. x= 20/3 or 6.6666 repeating
2. x=3
3. a=39
Step-by-step explanation:
1. subtract 25 by 5 to get 20, then divide 20 by 3 to get x
2. divide 7 by 21 to get x
3. add 8 to 31 to get a equals 39
It will be -1/8 because 8 is the common denominator and the numerator will be subract too so it is -1/8
