If the ratio of the corresponding side lengths of two similar polygons is 5: 9, what is the ratio of their perimeters?
a.
5: 9
b.
10: 9
c.
25: 81
d.
10: 81

Step-by-step explanation:

Alright, lets get started.

The ratio of sides of polygon is 5:9, so

So, suppose sides of first polygon will be = 5a, 5b, 5c

So, the sides of second polygon will be = 9a, 9b 9c

Hence the perimeter of first polygon will be =

Similarly, the perimeter of second polygon =

ratios of both perimeters will be =

So, the ratios of perimeter  = 5:9 :    Answer

Hope it will help :)

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation: