Which sequence of transformations proves that shape l is similar to shape ll? A: a 90° counterclockwise rotation about the origin and then a dilation by a scale factor of 2
B: a reflection across the x-axis and then a dilation by a scale factor of 3
C: a reflection across the x-axis and then a dilation by a scale factor of 2
D: a 90° counterclockwise rotation about the origin and then a dilation by a scale factor of 3

8 2/3 is the answer

step-by-step explanation: just use a calculator

care to share were the trapezoid shown is ?

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.