Answer:
Step-by-step explanation:
Given
---- Initial
--- rate
Required
The inequality that represents people more than 3000
The given parameters show a geometric sequence and will be calculated using:
Where t is the number of days
For the people to be more than 3000, the expression becomes:
Substitute values for a and r
Divide both sides by 15
Take log of both sides
Apply law of logarithm
Make t - 1 the subject
Add 1 to both sides
Round down
Answer:
the answer you are looking for is -11s
Assume that the larger number is m and the smaller one is n.
the larger is 10 less than twice the smaller, this means that:
m = 2n-10
the sum of the two is 38, this means that:
m+n = 38
substitute by the first equation in the second one:
2n-10+n=38
3n=48
n= 16
substitute by n in the first equation:
m=2n-10=2(16)-10= 22
based on this,
the larger number is 22 while the smaller number is 16
Wheres the rest of the problem? or is this it?
30t=50(t-1)
30t=50t-50
30t-50t=-50
-20t=-50
t=-50/-20
t=2.5 hours after the freight train leaves the station they will meet