Answer:
Part A.) 0.3 or 30%
Part B.) 0.5 or 50%
Step-by-step explanation:
She flipped the coin 30 times.
She flipped it 9 times for heads.
She flipped it 21 times for tails.
Part A.)
9/30
When you simplify that you get 3/10.
Which is 0.3 or a 30%
Part B.)
So there are only 2 sides of a coin.
Heads or tails, So its a 50 - 50
Hence
For One side it is 50/100
Which simplifies to 1/2
Or 0.5 which is 50%