15.99×8/100=1.28$ this is the tax
to get the total cost 15.99+1.28= 17.27$
Sqrt28 = 5.2915~
largest integer below = 5
(round down)
Slope of line t is -1/5
If two lines are perpendicular, the product of their slopes is -1
When looking for the midpoint of a segment defined by two end points, the average of both coordinates are taken. Averaging the 2 x-coordinates give the new x-coordinate, and the same applies for the y-coordinate. This is shown below:
Midpoint = ( (1 + 4)/2 , (-1 + -6)/2 )
Midpoint = (2.5 , -3.5)
The answer is A in my opinion
