Answer:
0
Step-by-step explanation:
2a+6=6
-6=-6
2a=0
2 2
a=0
The answer is B, I attached a picture of the steps.
Answer:
Step-by-step explanation:
The mean for all students is
[102(68.5) + 85(72.4)] / (102 + 85) = (6,987 + 6,154) / 187 = 70.27272727...
So YES the class average was a pass, but just barely.
Answer:
4
Step-by-step explanation:
-6-5(4-6)
PEMDAS stands for parenthesis, exponent, multiply, divide, add, subtract. Let's follow those rules!
First, we'll do the parenthesis.
-6-20+30
Now we can just add and subtract everything together.
-6+10
4
