It's B because all the students that attended added together is 320 and 37.5 of 320 is 120
Answer:
I believe it would be - (n+4) x 2
Step-by-step explanation:
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
They are adjacent because he share a vertex and a common side, and x=15° because 90°/(2+4)= 15
The answer is E=mc², Einstein's revolutionary formula.
