Answer:
Step-by-step explanation:
To solve for :
(given)
(times on both sides)
I hope this helps :)
Answer:
21
Step-by-step explanation:
He will guess correctly 25% of the time.
He has 84 questions
25% of 84
.25 * 84
21
We should expect that he will get 21 questions correct
I don't understand what you want solved for here...could you please tell me?