Answer:
10
Step-by-step explanation:
The radius is the magnitude of the complex number that is the difference between any point on the circle and the center point. A suitable calculator can tell you that magnitude:
║(8+7i) - (2-i)║ = √((8-2)² +(7-(-1))²) = √(36+64) = √100 = 10
Answer:
a) Interpretation of the expression
b)
Step-by-step explanation:
We are given the following in the question:
Unit cost of goby fish = $15
Unit cost of shrimp = $10
There are equal number of goby fish and shrimp in a bag.
A) The cost per bag with the expression
Interpretation:
The above expression represents the total cost of bag contain x number of goby fish and x number of shrimp where 15$ and 10$ are the unit cost of goby fish and shrimp respectively.
B) Expression for total cost
where C(x) is the total cost and x is the number of goby fish or the number of shrimps that are equal.