Answer:

Step-by-step explanation:
Notice that buy construction of a parallelogram,the angles
and
must equal each other. Then, based on the info given, we can write the following equation:

Then, angle
=
which is also equal to angle B
and since the addition of all internal angles of the parallelogram must equal
, then:

and therefore, since
and
must be equal, then:

Answer:
783
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
So first you know that the angles are across for each other meaning that they are equal.
Therefore the equation would be 7x-13 = 48
Simply do order of operations meaning you subtract 13 from 48 giving you 35.
Then do 35 divided by 7 which means X equals 5 which makes it D.