Answer:
3 x= 9
3x-4+4=5+4
Step-by-step explanation:
........
Answer:
-400i
General Formulas and Concepts:
<u>Algebra II</u>
Step-by-step explanation:
<u>Step 1: Define</u>
z = -400i - 44.5
<u>Step 2: Identify</u>
Treat imaginary <em>i</em> as a variable. The imaginary part of z would be the entire term of <em>i</em>. Therefore, our answer is -400i
Finding the correlation coefficient, it is found that the regression line shows a:
negative trend line with a strong relationship.
<h3>What is a correlation coefficient?</h3>
- It is an index that measures correlation between two variables, assuming values between -1 and 1.
- If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.
- If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.
Inserting the values of a table, the x-values as 25, 28, 30, 31, 33, 40, and the y-values as 7.5, 6, 5.5, 5, 4.5, 4.5, the coefficient is of -0.85, which is negative and strong.
More can be learned about correlation coefficients at brainly.com/question/25815006
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About 67%, percent of all students at Ridgemont High prefer pizza for lunch.
Multiply 2nd equation by 3 and add to first
9x-3y=-2
<u>-9x+3y=-9 +</u>
0x+0y=-7
0=-7
false
no solution
these lines aer paraalell so no solution
