Answer:
y = 9
Step-by-step explanation: this is because when x is 5 and is multiplied by -6 u get -30. from there u substratc -30 from -57 and get -27. so y is 9
Answer:
A=1
B=6
C=5
Step-by-step explanation:
0=ax²+bx+c
0= 1x²+6x+5
There is no number in front of x², so you know the coefficient is 1.
The coefficient in front of the x is 6.
The remaining number is 5.
It would take five hours for all the bacteria to die. 1000 divided by 5 is 200 so 200×5 = 1000