I believe it is b but I am not 100 percent sure so use at your risk
You simply divide the number of times you get heads (which is 9) over the total number of coin flips (which is 20)
So the answer as a fraction is 9/20
Converting to decimal form, you'd get 9/20 = 0.45
Answer:
there are 3 terms
Step-by-step explanation:
Hope i helped :)
Suppose Julia made x dollars in 2015, and Anna made y dollars.
in 2016, Julia made (x+30,000) and Anna made (y+10,000)
In 2016, after they paid 50% tax, they still had 80,000, which means before tax they had a total of 160,000, so
(x+30,000)+(y+10,000)=160,000
simplify: x+y=120,000
in 2015, Julia earned 20,000 more than Anna, so x=y+20,000. Plug it in the above equation: y+20,000+y=120,000
y=50,000
x=y+20,000=70,000
Julia made 70,000 dollars in 2015.