Answer:
B) 7 feet is the median (center) and 5 is the range (spread)
Step-by-step explanation:
spread is the difference between the largest and smallest numbers in the data set (9 - 4 = 5 in this case)
Answer:
5*x-3=12
the number is 3 because 5*3=15 and 15-3=12
Answer:
Step-by-step explanation:
66
- 43 = 47/2
Let the number be x
3x + 5 = 20
3x = 20 - 5
x = 15/3
x=5
Answer:
a² + b²
Step-by-step explanation:
(a + b)² - 2ab ← expand parenthesis using FOIL
= a² + 2ab + b² - 2ab ← collect like terms
= a² + b²
