There are ten identical-looking urns that contain large numbers of red and blue beads. Eight of these urns contain a majority of blue beads (call them Blue Urns). The other two
urns contain a majority of red beads (call them Red Urns). The proportion of the majority
colour in each urn is 75%. You first select an urn at random and then draw four beads
from it without looking. Three of the beads are red and one is blue. What is the
probability that you chose a Blue Urn?

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.

i think u have 12 apples sorry again i don't really know if it correct i'm just tryna hrlp people out.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72