Answer:
2i and -2i
Step-by-step explanation:
I'll change u to x to be easier to understand.
x^2 = -4
sqrt(x^2) = sqrt(-4)
sqrt(-4) = 2i, or -2i
Answer:
3x + y - 2 = 0
Step-by-step explanation:
The equation of a line in general form is
Ax + By + C = 0 ( A is a positive integer and B, C are integers )
Given
- 3x - y + 2 = 0 ← multiply through by - 1
3x + y - 2 = 0 ← in general form
Answer:

Step-by-step explanation:
Hi there!
Slope intercept form:
where m is the slope of the line and b is the y-intercept (the value of y when the line crosses the y-axis)
<u>1) Find the slope (m)</u>
where the two given points are
and 
Plug in the given points (2,8),and (8,2)

Therefore, the slope of the line is -1. Plug this into
:

<u>2) Find the y-intercept (b)</u>

Plug in a given point and solve for b

Add 2 to both sides

Therefore, the y-intercept is 10. Plug this back into
:

I hope this helps!
Answer:
he ran 3 miles in 8 mins
Step-by-step explanation: