Given quadratic equation


Using the usual conventions,
a=1, b=6, c=6
Apply the quadratic formula,

substitute a,b & c with numerical values,

simplify:
447/250
is the answer to the question
I think it is 6:15 > 30:80
hope it helps:)
Answer:
Step-by-step explanation:
7y+5+3y+5=70
10y+10=70
10y=60
y=6
7(6)+5= 42+5= 47
3(6)+5= 18 + 5 =23
47+23= 70