8*4 - 7 = 32-7 = 25
8*4 - 7 = 32-7 = 25
8*4 - 7 = 32-7 = 25
8*4 - 7 = 32-7 = 25
Chat with our AI personalities
Take 3k from both sides to get k-3 equals 4, so k is 7
20
y / r2 = a constant (k) so k = 405/81 ie 5. k = y/4 when r = 2, so y = 20.
1200°
If: y = 2x+k then y^2 = 4x^2 +4kx +k^2 by squaring both sides If: x^2 +y^2 = 4 then x^2 +4x^2 +4kx +(k^2 -4) = 0 So: 5x^2 +4kx +(k^2 -4) = 0 Using the discriminant: (4k)^2 -4*5*(k^2 -4) = 0 Solving the discriminant: k = -square root of 20 or +square root of 20