The answer is in the attachment
Answer:
-1.5/2
Step-by-step explanation:
To factor you have to do this:
s^2 + 9s = -20
+ 20 +20
s^2 + 9s + 20 = 0
now you need to numbers that multiplied give you 20
and then those same 2 numbers have to add to 9
5 x 4 = 20
5+ 4 = 9
(x + 4) (x+ 5)
that means that x= -4, and -5
You could wash 75 cars at this rate because 45/3 equals 15. You would multiply 5 by 15 and get 75.
Answer:
2,099/2,100
Step-by-step explanation:
2,100-1=2,099
