Probability=(number of specific outcomes)/(number of possible outcomes)
There are 4+2+6+5=17 total marbles so:
P(Yellow)=4/17
P(Blue)=2/17
P(Black)=5/17
P(Red)=6/17
Answer:

Step-by-step explanation:

Combine 

Combine the bottom, too.

Apply the fraction rule

Cancel

Therefore, 
The answer is actually choice B. To solve for the area of a trapezoid, you would do the formula a+b/2 h.
Answer:
The sum of the three inside angles of a triangle need to equal 180 degrees.
X = 180 - 79 - 73
x = 28 degrees