Option 2: 18-5i is the right answer
Step-by-step explanation:
Given

When there is a negative number in radical, a new complex number iota denoted by i is introduced which is equal to 
So we will solve the given expression

Hence,
Option 2: 18-5i is the right answer
Keywords: Iota, complex numbers
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Answer:

Step-by-step explanation:
The following piecewise functions are linear functions. The graph of any of them is a line segment.
We just need to calculate the value of the function at each end specified in the brace.

Substitute x =-1 and x = 0:

Range of this piece is [-5; -2)

Substitute x =0and x = 5:

Range of this piece is [3; 13)
Therefore the range of the following piecewise function is:

Look at the picture.
Y intercept slope - 5,0
X intercept slope - 0,-4
Solution:
we are given that
she wants to track to have a circumference of 150 feet.
we have been asked to find
what does the radius of the track need to be?
As we know that

Substitute the values we get

Hence radius=23.863 feet.
Make bototm number same
3/10 times 13/13=39/130
4/13 times 10/10=40/130
A.
39/130 and 40/130
they are 1/130 apart
B.
a ratioal number between
39/130=390/1300
40/130=400/1300
between 390/1300 and 400/1300
any number from 391/1300 to 399/1300 example 395/1300