K=1/3
simplify each bracket, put all numbers on the left hand side, equal it to 0 and solve for k
What is the answer to this problem
2 answers:
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The solution for the system of equations are:
Attached is the graph of lines y=3x-2 and y=-2x+5.
Attached is the graph of lines y=3x-2 and y=-2x+5.
Answer:
Amount invested at 8% is $9000 and amount invested at 18% is $21000.
Step-by-step explanation:
Let amount invested at 8% be x.
Let amount invested at 18% be y.
We get the 1st equation as:
........(1)
We get the second equation as:
=>
or getting rid of the decimal by multiplying by 100 on both sides.
........(2)
Multiplying (1) by 8 and subtracting from (2) we get
So, y = 21000
And
So, x = 9000
Therefore, amount invested at 8% is $9000 and amount invested at 18% is $21000.