Answer:
36 200 a-c = 36 for 200 and that is how it's done
Answer:
I think it could be 8+6+y
Step-by-step explanation: I dont really know but dont delete this. Can I be Brainlyest please?
Answer:
x>8
Step-by-step explanation:
4+3x>24
-4 -4
3x > 24
/3 /3
x > 8
Answer: False
Step-by-step explanation:
For this to be true; x must be squared.
Answer:
B. 95% confident the average concentration of PCBs in the water supply is between 2.9 ppb and 3.5 ppb
Step-by-step explanation:
You are given the total number of samples, the concentration of lead, and the standard deviation. The standard deviation represents how inaccurate the estimation of the concentration of lead in the drinking water. This means that there can only possibly be a 0.3 ppb error in the estimation. 3.2-0.3=2.9, and 3.2+0.3=3.5