Answer:
0
Step-by-step explanation:
3√128-2√6x4√3
= 3√2√64 - 2√6 x 4√3
= 24√2 - 2√6 x 4√3
= 24√2 - 8√18
= 24√2 - 8√2 * √9
= 24√2 - 3* 8√2
= 24√2 - 24√2
= 0
A (-9.5, -9.5) B (5.5,-2.5) C (3.5,3.5)
Answer:
Step-by-step explanation:
Amount of brine = 100 gal
amount of salt = 80 lb
rate of water running = 4 gal / min
Let A be the amount of salt in lb in the tank at any time t.
(a) dA/dt = rate of salt in - rate of salt out
Rate of salt in = 0
rate of salt out = A x 4 / 100 = A / 25 lb/min
So, dA/dt = 0 - A/25 = - A/25 lb/min
When t = 0, A = 80 lb
So,
(b) Now, A = 40 lb
So,
take log on both the sides
t = 17.3 minutes
Answer:
Step-by-step explanation:
Given equation:
Multiply both sides by (x - 1):
Expand the brackets:
Add r to both sides:
Divide both sides by r:
Volume of an iceberg = 7685 cubic feet
Since, density of ice = 0.917
We have to determine the mass of the ice.
Since density =
Since the unit of density is in , first we will convert the density unit in kilogram.
Since, 1 kilogram = 1000 gram
Therefore, density =
= 0.000917
Since, the density unit is in cubic centimeter. We will convert it into cubic feet.
1 cubic centimeter = 0.00003531466 cubic feet
Therefore, 0.000917 = 0.000917 x 0.00003531466
= 0.0000000323 .
Now, mass =
= 0.0000000323 7685
= 0.000248
=0.00025 .
Therefore, the mass of ice is 0.00025 .