(12 * 7 + n)8=12.5
(12 * 7 + n)= 100
N= 16. The new number will be 16. Hope this helps. :)
Complementary angles have a sum of 90 degree, right angle
It would be C. Since it’s the only 2 angles that form a right angle
92 can be rounded to 90
68 can be rounded to 70
90 x 70 = 6300
Answer:
Option B is correct

Step-by-step explanation:
Given that:
and
are supplementary.
prove that: 
It is given that:
and
are supplementary.
By definition of supplementary
⇒
.....[1]
From the figure, you can see that:
and
are also supplementary.
⇒
.....[2]
By [1] and [2] we have;
⇒
Simplify:

Since ∠2 and ∠3 are corresponding angles.
Corresponding angles states when the two lines are parallel, then Corresponding Angles are equal and vice versa.
by definition we have;
proved!