Answer: A
Explaination:
The cause and effect relationship of a certain phenomenon under controlled condition
Answer:
1/2
Step-by-step explanation:
5.3 minutes.
First, let's calculate the volume of the tank. That will be the area of the base multiplied by it's length. And since it's base is a circle, the area is pi*r^2. So:
V = l*pi*r^2
V = 3.5 * pi * (2.2/2)^2
V = 3.5 * pi * (1.1)^2
V = 3.5 * pi * 1.21
V = 4.235 * pi
V = 13.30464489
So the tank has a volume of about 13.3 ft^3. Now simply divide that volume
by the rate of incoming fluid. So
13.3 / 2.5 = 5.32
Rounding to 2 significant figures gives a time of 5.3 minutes.
I hope this helps you
2x=b-a
x=b-a/2
Answer:
John and Mike are correct, Henry is incorrect.
Step-by-step explanation:
Try to find x = 4 for all the equations to find out who is correct.
John:
4x + 4 + 7x = 48
Combine like terms.
11x + 4 = 48
Subtract 4 from both sides.
11x = 44
Divide both sides by 11.
x = 4
John is correct.
Mike:
2x + 3 = 11
Subtract 3 from both sides.
2x = 8
Divide both sides by 2.
x = 4
Mike is correct.
Henry:
8x + 7 = 71
Subtract 7 from both sides.
8x = 64
Divide both sides by 8.
x = 8
Henry is incorrect.
