For -4/5-7/8 it is -1.675
But for 4/5-7/8 it is.075
Answer:
40 units
Step-by-step explanation:
An octagon is a polygon with 8 sides. A regular octagon is an octagon in which all their sides and angles are equal to each other.
Since the vertices of a regular octagon are located at (1, 4) and (4,8), hence the length of the side is gotten using the formula for calculating the distance between two points
.

Hence:

Since all the sides of a regular octagon are equal, therefore:
Perimeter = 8 × length = 8 × 5 = 40 units
Step-by-step explanation:
2x - y = 11 -----(1)
x + 3y = -5 ------(2)
By
eliminating "y"
multiple equation 1 by 3 and equation 2 by 1
3×2x - 3y = 3×11
6x - 3y = 33 -----(3)
x + 3y = -5 ------(2)
add eqn (3) and eqn(2)
7x + 0 = 28
7x/7 = 28/7
x = 4
I hope this will help you, good luck!!!
Answer:
x=10
Step-by-step explanation:
first substitute y with the value (-5)
2x+5(-5)=-5 which is simplified to 2x+-25=-5
add 25 to -5 which gives you 2x=20
then divide 20 by 2 which makes x=10