Slope intercept form
y = mx+b
y = -7x + 9
m = -7
2nd degree with real coefients
so if a+bi is a root then a-bi is also a root
if 2+i is a root then 2-i is also a root
so, the factored form of a quadratic equation with roots r1 and r2 is
(x-r1)(x-r2)
so
2+i and 2-i
(x-(2+i))(x-(2-i))
(x-2-i)(x-2+i)
expanding we get
x²-4x+5
so c=5
Answer:
what grade so i can help you
Step-by-step explanation:
8x = boys
7x = girls
8x + 7x = 195
15x = 195
/15
x = 13
8x = 8 • 13 = 104
7x = 7 • 13 = 91
104 boys and 91 girls
Answer:
no
Step-by-step explanation:
18 is not a multiple of 12
and 12 is not a multiple of 8