Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest tenth. X X X - X (X - X)2 1. 900 = 466.2 = 4,382.4 The mean is 433.8 2. 35 = -398.8 = 159,041.4 The variance is 99,667.2 3. 500 = 66.2 = The standard deviation is 4. 300 = -133.8 = n = Σ X = X = Σ (X - X)2 = 398,668.6

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Julian wrote the following numeric pattern on the board3,10,17,24,31,38.what numbers of julian's pattern are compound numbers.

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?