Answer:
-28
Step-by-step explanation:
20x+12y-28=20x+12y+[?
subtract like term so 20x-20x and 12y-12y
therefore -28 =[?
Well you add them all up then divide by five, because thats how many days it was recorded, and the average is -1.2
Answer: 138
Step-by-step explanation:
by the corresponding angles theorem.