19.75-6.4=13.35
now 13.35-4.36=8.99
the third piece is 8.99 meter long
So it starts with 12 in the bacterial population. After 1 hour, 6 are added. After another hour passed, 9 are added. 12/1, 18/6, 27/9.
Answer:
(11, ∞).
Step-by-step explanation:
3 (x+2)+9<6(x-3)
3x + 6 + 9 < 6x - 18
-3x < -18 - 6 - 9
-3x < -33
x > 11 (Note the inequality flips as we are dividing by a negative value).
Answer: 16 quarts
Step-by-step explanation:
There are 4 quarts per 1 gallon.
You need 4 gallons total to cover the wall.
4 x 4=16