Answer:
The answer is below
Step-by-step explanation:
Let s(t) represent the amount of salt in the tank at time t. Therefore:
ds / dt = (rate of salt flowing into the tank) - (rate of salt going out of the tank)
Answer:
no solutions
Step-by-step explanation:
4 + 5m = 4m + 1 + m <em>combine like terms</em>
4 + 5m = 5m + 1 <em>subtract 5m from each side</em>
4 = 1
4 can never equal 1, so no value of m would allow the equation to be correct
Answer:
1) 1 and 4
2) 1 and 2
3) 1 and 5
4) 2 and 3
5) 130
6) 90
7) 25
8) 115
9) 70
10) 115
11) 40
12) 105
Step-by-step explanation:
Hope this isn't spam! Lol
Answer: it will take 27.8 years for the populations of the towns to be equal.
Step-by-step explanation:
Let x represent the number of years it will take for the populations of the towns to be equal.
A town's population is 14,000, and it is INCREASING by 160 people every year. This means that the town's population after x years is
160x + 14000
A nearby town has population of 24,000 and is DECREASING by 200 every year. This means that the town's population after x years is
24000 - 200x
For the population to be the same, the number of years would be
160x + 14000 = 24000 - 200x
160x + 200x = 24000 - 14000
360x = 10000
x = 10000/360
x = 27.8 years
The answer is the third choice they both equal -16/77. Hope this helps:)