Put the numbers in order. 1, 2, 5, 6, 7, 9, 12, 15, 18, 19, 27. Step 2: Find the median. 1, 2, 5, 6, 7, 9, 12, 15, 18, 19, 27. Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically, but it makes Q1 and Q3 easier to spot. (1, 2, 5, 6, 7), 9, (12, 15, 18, 19, 27). Step 4: Find Q1 and Q3 Think of Q1 as a median in the lower half of the data and think of Q3 as a median for the upper half of data. (1, 2, 5, 6, 7), 9, ( 12, 15, 18, 19, 27). Q1 = 5 and Q3 = 18. Step 5: Subtract Q1 from Q3 to find the interquartile range. 18 – 5 = 13.
5x + 2 is a denominator. A denominator cannot equal zero since division by zero is undefined. Set the denominator equal to zero and solve for x to find which value of x makes the denominator zero.
5x + 2 = 0
5x = -2
x = -2/5
The non-permissible replacement for the variable is -2/5.
This is because to find the scale factor, you have to take the square root of the area scale. This will give you 30-1 ratio. Then multiply the 4 by that number.
