Answer:
The original number is
Step-by-step explanation:
Let
x -----> the original number
Remember that
The increased number is equal to multiply the original number by the factor 1.071
so
Solve for x
Divide by 1.071 both sides
Systems of equations needs to be solved in substitution form I will give five stars for the answer
1 answer:
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Answer: a) k >4.08
b) k = 4.08
c) k<4.08
Step-by-step explanation:
Since we have given that
a) For what values of k will the function have no zeros?
It mean it has no real zeroes i.e. Discriminant < 0
As we know that
Here, a =-3
b = 7
c = -k
So, it becomes,
b) For what values of k will the function have one zero?
It means it has one real root i.e equal roots.
So, in this case, D = 0
So, it becomes,
c) For what values of k will the function have two zeros?
It means it has two real roots.
In this case, D>0
So, it becomes,
Hence, a) k >4.08
b) k = 4.08
c) k<4.08