Answer:
I dont know what sin is
Step-by-step explanation:
For 13 a 0 degree line is a straight line
Answer:
2.0
Step-by-step explanation:
x = age
y = average systolic blood pressure
x₁ = 40 years old, y₁ = 110 systolic blood pressure
x₂ = 50 years old, y₂ = 130 systolic blood pressure

∴ Slope of the regression line is 2.0
Answer:12,000
Step-by-step explanation:
.05*30,000=1,500
1,500*12=18,000
30,000-18,000=12,000