Answer:
C
Step-by-step explanation:
A positive charged ion or cation would have more protons than electrons.
Answer:
The standard error of the mean is 0.85.
Step-by-step explanation:
The given standard deviation of a population (σ) = 7.8
sample size (N) = 85
We have to find standard error of the mean.
The formula to find standard error of the mean
= (standard deviation of the distribution) / (square root of sample size)
= (σ) / (√N)
= 7.8 / (√85)
= 7.8 / 9.219544457
= 0.8460
= 0.85 (approximately taken to two decimal places)
We have got the required answer.
The standard error of the mean is 0.85.
Answer:
(m + 2 - x) (m + 2 + x)
Step-by-step explanation:
m² + 4m + 4 - x²
m² + 2(m)(2) + 2² - x²
(m + 2)² - x²
(m + 2 - x) (m + 2 + x)
