Answer:
The answer is "70.38".
Step-by-step explanation:
Given:
solution:

Total 


<span><span><span>2x </span>+ 7 </span>= <span><span>x + x </span>+ 7 is an example of an equation with an infinite number of solutions, meaning any number could be the answer.
</span></span>
Answer:
-2x+3
Step-by-step explanation:
7-3x-4+x=-2x+3
Answer:
It can be 23 or 823
Step-by-step explanation:
Depends because if you divide 138 and 6 you'll get 23.
If you multiply 138 times 6 you'll get 823
31°
Angles in the same segment are similar.
I'm not too sure how to explain, but in a circle when two "triangles" are formed from two same points on the circumference, the angle of the vertexes formed are the same (like in the picture)