Answer:
Yes, SAS theorem. Angle ACB and Angle ECD are congruent because of the vertical angles theorem.
Step-by-step explanation:
A line adds up to equal 180 degrees. And adjacent angles also add to equal 180 since they share a side on a line. So add them together and make them equal 180
9x - 7 + 8.5x + 4 = 180
17.5x - 3 = 180
17.5x = 183
x = 10.5
Answer:
<u>=-26.7</u>
Step-by-step explanation:
=-13.9+(-12.8)
=-13.9-12.8
<u>=-26.7</u>
Do you have a specific equation I can help you with. I can explain them better with a problem to look at?
Answer:
1
Step-by-step explanation:
