Answer:
8 = 8
Step-by-step explanation:
If the numbers are the same, they are equal ( = )
Answer:
3
Step-by-step explanation:
Answer:
the mean is $80
Step-by-step explanation:
Answer: x = 61.81925228
Step-by-step explanation:
Answer:
80 + 18i
Step-by-step explanation:
i² = -1
x = i + 9
x² = (i + 9)²
Applying; (a + b)² = a² + 2ab + b² concept,
x² = i² + 18i + 81
We know that i² = -1
So x² = -1 + 18i + 81
x² = 81 - 1 + 18i = 80 + 18i