Answer:
It would be unusual to get 4 or more questions correct by guessing alone.
Step-by-step explanation:
You have a 1 in 3 probability(there are three choices) of guessing the correct answer for a single question. You have 12 opportunities to guess.
So, the probability will be = = 4
Therefore, it would be unusual to get 4 or more questions correct by guessing alone.
The missing coefficient of n in n + 8 is 9 after adding like terms which is 2n and 7n.
<h3>What is an expression?</h3>It is defined as the combination of constants and variables with mathematical operators.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have an expression:
= 2n + (7n + 8)
After adding like terms:
9n + 8
The coefficient of n in n + 8 is 9
Thus, the coefficient of n in n + 8 is 9 after adding like terms which is 2n and 7n.
Learn more about the expression here:
#SPJ1
