Answer: See explanation
Explanation:
1. Step 1: Add up all the numbers.
12 + 15 + 10 + 15 + 11 + 12 + 15 = 90
Step 2: Count how many numbers there are.
There are 7 numbers
Step 3: Divide the sum of the numbers by amount of numbers.
90 ÷ 7 = 12.85
12.85 ≈ 12.9
Mean = 12.9 in tenth place or 13 in whole place
2. The mode is the number that appears the most
15 appears 3 times.
3. 38 / +38
4. 1 week = 7 days
7 × 2 = 14
9 weeks = 9 × 7 = 63
63 × 3 = 189
189 + 14 = 203
203 miles in all
5. Area of 1st rectangle: b × h
4 × 14 = 56
Area of 2nd rectangle: b × h
4 × 14 = 56
56 + 56 = 112
Area of polygon = 112
Hope this helps!