800 because the thing is 800
Given
centre of circle O(3,2)=O(x0,y0)
point on circle P(6,-2)
Standard equation of circle:
(x-x0)^2+(y-y0)^2=r^2
r=radius of circle
= (distance OP)
= sqrt((6-3)^2+(-2-2)^2)
=sqrt(3^2+(-4)^2)
=sqrt(25)
=>
r^2=(sqrt(25))^2=25
Equation of circle
(x-x0)^2+(y-y0)^2=r^2
(x-3)^2+(y-2)^2=25 ............... standard equation of circle
Note the subtraction sign. Distribute the negative sign to all terms within the second equation.
6d + 5 - 2 +3d
Combine like terms
6d + 3d + 5 - 2
9d + 3
9d + 3 is your answer
Hope this helps
Need mas
Find volume
- πr²h
- π(6)²(18)
- 36(18)π
- 2034.7cm³
Mass
As volume is same
Divide their densities to find ratio
- Gold /Silver
- 19.32/10.5
- 1.84 times heavier is gold
X1= -1.683
X2=0.816
X3=0.6666