The graph of the equation is Ax+2y =-2 is the line that passes through (2,-2) what is value A
1 answer:
Answer:
The value of A in the given graph of the equation is 1
That is A=1
Step-by-step explanation:
Given graph of the equation is Ax+2y=-2
Given that the equation of line Ax+2y=-2 passes through the point (2,-2)
Let (x,y) br the point (2,-2)
Therefore we have that
A(2)+2(-2)=-2
2A-4=-2
2A-4+2=-2+2
2A-2=0
2A=2
Therefore A=1
Therefore the value of A in the given graph of the equation is 1
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Answer:
The percent increase of the second year is 400%.
Step-by-step explanation:
Consider the provided information.
Let the population of birds was x.
After 2 years the population becomes 7 times more than before.
Therefore, after 2 years population is 7x.
In first year increase in the population was 40%.
Population after 1st year = x + 40% of x
Population after 1st year = x + 0.40x
Population after 1st year = 1.4x
The population increase from 1st year to 2nd year is: 7x-1.4x=5.6x
Thus the percentage increase is:
Hence, in second year the population of birds increase by 400%.