General form of circle with center at C(a,b) and radius r is
(x-a)^2 + (y-b)^2 = r^2. Here,
(x-(-3))^2 + (y-12)^2 = 5^2, or (x+3)^2 + (y-12)^2 = 25
25% of 8
.25 x 8 = 2
2 of the squares are red and the rest our blue
So 8-2 = 6 blue squares
RED SQUARES = 2
BLUE SQUARES = 6
The 2 equations are
-2x + y = -17 ---1)
3x + y = 23 ---2)
we need to have the same coefficient for one of the variables.
Already y variable has the coefficient of 1 for both equations so we can use the equations as it is.
2) - 1) subtract 1) from 2)
3x-(-2x) + y -y = 23-(-17)
5x = 40
x = 8
substituting x = 8 in the 2nd equation
3*8 + y = 23
24 + y = 23
y = -1
solution - (8,-1)
hi
monthly interest rate is : ![\sqrt[12]{1.05}](https://tex.z-dn.net/?f=%5Csqrt%5B12%5D%7B1.05%7D)
So in forty month there will be : 10 000 * ( )^40 ≈11 776,06
