You have to use the substitution method by substituting one Y value with the other
Answer:
D. 14.32
Step-by-step explanation:
The formula for standard deviation is:

The mean μ is 33.
The (x minus μ) squared are 361, 49, 49, 361 respectively.
So that the SD = 
Answer:
712
Step-by-step explanation:
400+6.5%of 4800
312+400=712
Answer:
5
Step-by-step explanation:
sqrt[(-8+3)² + (-6+6)²] = 5
The answer is 3.1 cm
Solution:
2(6.3)+b=15.7
12.6+b=15.7
subtract 12.6 from btohs ides
b=3.1
answer is base=3.1 cm