Answer:
Step-by-step explanation:
27π= 120°/360°* πr^2
81=r^2
r=9
Area of circle=πr^2
Area of circle=254.34 or 81π
Answer:
y = 542 years
Step-by-step explanation:
Given that,
The regression equation, y= 4.39x-6.77 is used to predict the age of a tree.
y is age of a tree and x is diameter
Put x = 125 cm
Put the value of x in above equation.
y = 4.39(125)-6.77
=548.75 - 6.77
= 541.98
or
y = 542
So, the tree is 542 years old.
Answer:
x = -4 + 8yi/3 + i/3, y = -3xi/8 - 1/8 - 3i/2
Answer:
0.03259..
Step-by-step explanation:
