Answer: believe the answer is A
Answer:
See explanation
Step-by-step explanation:
1. The student is wrong because imaginary roots always occur in conjugate pairs.
So -4i cannot be the only imaginary root. It has to be accompanied by 4i also.
2. So the 2 roots can be 4i and -4i.
therefore the equation can be
(x - 4i)(x + 4i) = 0
+ 16 = 0
He needs to save 48$ Ashton already saved 72$.
120*.6= 72
120-72=48
Step-by-step explanation:
f(x) =x2- 10x +21
10x-2x=21
8x = 21
x =21/8
x = 2.625
Answer:
$365.70
Step-by-step explanation:
The formula to find this is
For this, a is the initial amount, r is the growth rate percentage (but displayed as a decimal), and t is time.
So to solve, you would do