Answer:
$2125 interest accumulated at the end of 10 years .
Step-by-step explanation:
Formula
As given
An investor puts $2,500 into a life insurance policy that pays 8.5% simple annual interest.
Principle = $2500
Rate = 8.5 %
Time = 10 years
Putting all the values in the formula
Simple interest = $ 2125
Therefore the $2125 interest accumulated at the end of 10 years .
Answer:
x =
Step-by-step explanation:
We have
7x²=9+x
Subtracting x from both sides, we get
7x²-x=9+x-x
Cancelling out +x and -x from the right side, we get
7x²-x=9
Subtracting 9 from both sides, we get
7x²-x-9=9-9
Cancelling out 9 and -9 from the right side, we have
7x²-x-9 = 0
The above equation is in the form ax²+bx+c=0 where upon comparing we get a= 7 , b = -1 and c= -9
We can solve for x using the below quadratic formula:-
x =
Upon solving we'll get two values for x, one positive an the other negative.