Suppose you have three concentric circles and are looking at the arc lengths of a 20° angle of each. If the radii of the circles have a ratio of 2:3:9, what is the ratio of the arc lengths? The ratio of the arc lengths will be 2:__:__
(use ascending order. Type integers or simplified fractions.) ​

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

where are the choices?

she was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75 .

correct me if i'm wrong and if it is i'm truly sorry.

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.