Answer:
0.21
Step-by-step explanation:
The given expression is :

We need to solve it.
We know that,

So,

or

So, the value of the given expression is equal to 0.21.
It is 80. Opposite angles in a parallelogram are equal.
Answer:
12.5%
Step-by-step explanation:
percent = # of October birthdays/total class # = 4/ 32 = 1/8 = 0.125 = 12.5%