Answer:
The probability of selecting both yellow is 5/22.
Step-by-step explanation:
Given the number of yellow marbles = 6
Black marbles = 4
Purple marble = 2
Now find the total number of marbles in the jar.
Thus total marbles = Yellow marbles + Black marbles  + Purples marble
Now insert the values in the above formula.
Total marbles = 6 + 4 + 2
Total marbles = 12
The probability of 2 yellow marble:

Thus, the probability of selecting both yellow is 5/22.
 
        
             
        
        
        
Answer:
The answer is 1.65
Step-by-step explanation:
−2.25−(−3.9)
=−2.25−(−3.9)
=−2.25+3.9
=1.65
 
        
             
        
        
        
11 / 12 - 8 / 12 = 3 / 12 = 1/4 square meters;
        
             
        
        
        
The formula for the area of the triangles is base x hight divided by 2 (bh/2) 
The formula for the square is length times width (l x w)
therefore... 
bh/2 = (12)(6) / 2 = 36 (this is the area of one triangle) 
then you need to times 36 by 4 because you have 4 triangles. 
36 x 4 = 144
l x w = 12 x 12 = 144 (this is the area of the square) 
last you need to add the area of the triangles (144) and the area of the square (144) because that will give you the total surface area of the shape. 
144+144= 288 
so your answer is 288cm squared (288cm2) 
        
                    
             
        
        
        
Well number one is an acute angle number two is obtuse and number three is obtuse