Answer:
B or 31r-71
Step-by-step explanation:
First, use distributive property to expand the first term.
30r-66-(5-r)
Remove the parenthesis of the third term:
30r-66-5+r
Combine like terms
31r-71
6x-9=15
6x=24
x=4
Therefore the answer is A.
Hope this helps :)
Answer:
105°, 75°, and 105°.
Step-by-step explanation:
If two straight paths intersect at a point , four angles will be formed.
These are pairs of vertical angles.
The adjacent angles add up to 180°
If one of the angles is 75°, the supplement will be

Therefore the three other angles will be , 105°, 75°, and 105°.
For question 6 the answer is 100 because a quarter of a circle is 90 degrees
H+6.9=1.4
H=1.4-6.9 -6.9 FOR BOTH SIDE
H=-5.5