X+y=15
0.3x+0.6y=0.4*15=6
solve the system of equation.
Multiply equation one by 0.3: 0.3x+0.3y=4.5
subtract the new from the second equation: 0.3y=1.5
y=5
x=10
Answer:
= 3.75
Step-by-step explanation:
The n th term of a geometric sequence is
= a₁
where a₁ is the first term and r the common ratio
Here a₁ = 30 and r = 
, thus
= 30
= 30 × 
= 
= 
= 3.75
Well... looking at how to question is defining things.....i think this is a multiple choice question.....
Given:
"y" represents the population
"x" represents the number of years
duration = 2000 - 1990 = 10 years
population increase = 2700 - 1200 = 1500
Now,
<u></u><u>It says linear equation........</u><u>, So, we have to assume that every ten years the population increases by a fixed </u><u>amount that is 1500 people every 10 years.</u><u />
Now,
Every 10 years, the population increases by 1500
Every 1 year , the population increases by 1500 / 10
= 150
Now,
The equation in determining the population is:
y = 150x + 1200
<u />
Answer:
Step-by-step explanation:
Putting x = 1
=> 
Given that f(1) = 1
=> 
=> 
-------------------(1)
Now,
Putting x = 2
=> 
Given that f(2) = 5
=> 
=> 
=> 
----------------(2)
Subtracting (2) from (1)
For b , Put a = 9 in equation (1)
