Answer:
<em>x² + y² = 841 </em>
Step-by-step explanation:
Midpoint of diameter is a center of a circle.
Coordinates of midpoint are
( 
, 
)
( 
, 
)
( 
, 
)
d = 
Equation of a circle with center at (h, k) and radius "r" is (x - h)² + (y - k)² = r²
~~~~~~~~~~
C(20, 21)
D(- 20, 21)
( 
, 
) = (0, 0)
d = 
= √3364 = 58
r = 
= 29
x² + y² = 29²
<em>x² + y² = 841</em>
Can you give me the expressions?
Answer:
24+9h=42
Subtract 24 from both sides:
9h=18
Divide both sides by 9:
h=2
It will be completed after 2 hours.
Step-by-step explanation:
400+575+575+670+720+885+1250=5075
5075/7=725
Mean = 725
400, 575, 575, 670, 720, 885, 1250
Median = 670
725>670
C) The Mean is greater than the Median
