Answer:
(x + 9)² = 36
Step-by-step explanation:
Given
x² + 18x + 57 = 12 ( subtract 57 from both sides )
x² + 18x = - 45
To complete the square
add ( half the coefficient of the x- term)² to both sides
x² + 2(9)x + 81 = - 45 + 81
(x + 9)² = 36
30% is needed because i believe it is i am really trying hope u get it right <span />
It is -8y+12
You have to multiply 4 by -2 which equals -8
Then you do 4x3 which equals 12
Maybe u should try a graph
Probability of spinning a C =1/4
Probability of flipping heads = 1/2
1/4*1/2 = 1/8
