Answer:
V = 14 + 5t
14 + 5t ≥ 49
Lucy has to add water at least for 7 minutes.
Step-by-step explanation:
There were 14 liters of water in Lucy's fish tank. She was about to add water at the rate of 5 liters per minute until there were at least 49 liters of water in the tank.
If t represents the number of minutes she adds water and V is the volume of water in liters in the fish tank, then we can write the equation as
V = 14 + 5t ........... (1)
Now, this volume of water in the tank V must be at least 49 liters.
So, 14 + 5t ≥ 49 is the required inequality.
⇒ 5t ≥ 35
⇒ t ≥ 7
So, Lucy has to add water at least for 7 minutes. (Answer)
Solve for x in X-2 (x=8)
Substitute X=8 into 3x - 6y =18 (24-6y=18)
Solve for y in 24-6y=18 (y=1)
X=8 and y=1
Answer:
36 cm²
Step-by-step explanation:
Add the bases, then multiply by the height
So it's
(2 + 4) 6
6 • 6
36 cm²
Answer:
y=1
Step-by-step explanation:
Move 18 to the other side. -3y=-3. y=1.
