What property justifies line 2 to line 3? 4 – 3x2 + 2x – x2 + 3 + x2 Line 1 4 + 3– x2 + x2 – 3x2 + 2x Line 2 7– x2 + x2 – 3x2 +
1 answer:
Given:
The steps of simplification of the expression.
To find:
The properties to justify the line 2 and line 3.
Solution:
We have,
Line 1: (Rearranging the terms)
Line 2: (Combining the constant terms)
Line 3: (Additive inverse property)
Line 4: (Additive identity property)
Therefore, the justifications of Line 2 and Line 3 are combining the constant terms and additive inverse property respectively.
You might be interested in
Answer:
The 90% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is n = 1007
The sample proportion is
From the question we are told the confidence level is 90% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
=>
Generally 90% confidence interval is mathematically represented as
=>
=>