Answer:
D
Step-by-step explanation:

Check the picture below.
you can pretty much just count the units off the grid.
the perimeter is the length of all sides summed up.
For the equation:
-1=5 x^2 - 2 x
5 x^2 - 2 x + 1 = 0, then we substitute: a=5, b=-2, c =1
to discriminant formula: D= b^2 - 4 a c = (-2)^2 - 4 * 5 * 1 = 4 - 20 = - 16
Answer:
The discriminant is equal to -16 which means the equation has no real number solutions.
Answer:
Step-by-step explanation:
Itś 5n²