Step-by-step explanation:
x^2 -2kx +7k -12 = 0
two equal roots -->Δ = b^2 -4ac = 4k^2 - 4(7k-12)=0 = 4(k^2 - 7k +12)=4(k-4)(k-3)=0
so k =3 and k =4
Answer:
55 for 1 min
110 for 2 min
165 for 3 min
Hello!
Three decimals less then 0.85 are:
1) 0.4
2) 0.5
3) 0.6
I hope it helps!
