5+10=15
or 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
For every 2 silver watches, there are 3 gold watches :)
Answer:
-9
Step-by-step explanation:
Since the opposite angles of both sides are congruent we know that the sides must be congruent also. Therefore, to solve for x we can set them equal to each other.
So the equation will be x+19=10, to solve we must isolate the variable.
First, subtract 19 from both sides
x+19-19=10-19
Then, simplify
x=-9
Step-by-step explanation:
the angle should be 60°
3 because 7*3=21,...........