Answer:
is C maybe
Step-by-step explanation:
don't really know just picked
The straight lines are asking to find the modulus or the size of the complex number.
For a complex number z = x + iy, [z] = √(x^2 +y^2)
Where x = Real Number, y = Imaginary number.
For 3 +i, x = 3, y = 1 (Note y is what number that is attached to i)
[3 + i] = √(3^2 +1^2) = √10 = 3.162
We have the following equation:
V = (1/3) * (pi) * (r ^ 2) * (h)
To clear r we must follow the following steps:
1) Divide both sides of the equation by pi*h
2) Multiply both sides of the equation by 3
3) take de square root of both sides of the equation
The 33% discount is $13.20, so the cost of the sweater is now $26.80
