1.nadia selects three marbles from the jar to the right without without replacing them. what is the probability that all three marbles are blue? there are 4 red marbles, 7 blue marbles, and 5 green marbles a total of 16 marbles on a jar hurry need answer asap

32

Step-by-step explanation:

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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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.