Answer:
9
Step-by-step explanation:
2,3,4,7,7,7,9,9,14,17,21
21,17,14,9,9,7,7,7,4,3,2
3,7,7,7,9,9,17,21
Solution
Step 1
The opposite angles of a parallelogram are equal:
Step 2

The equation is made true by the opposite angles theorem is
85 + y = 3y - 15
or
y = 50
Answer:
7^-22
Step-by-step explanation:
Exponent laws.
X = 0.6666.... |multiply both sides by 10
10x = 6.666...
10x - x = 6.666... - 0.666...
9x = 6 |divide both sides by 9
x = 6/9
x = 2/3
0.666... = 2/3
2/3 = 2/3 · 100% = 200/3% = 66 2/3 %