Answer:
A & B are independent events. A & C, B & C are not independent events. 
Step-by-step explanation:
Independent Events are the events, whose occurrences are completely unrelated to each other. 
Event A 'Red dice getting 3' & Event B 'Green die getting 4' ; are unrelated to each other. The numbers on red dice & on green dice are not dependent on each other.
Event C 'Red & Green dice numbers showing sum = 7' is dependent on the numbers coming on red & green dice , i.e events A & events B respectively. So, event C is dependent on both events A & B. 
 
        
             
        
        
        
Answer:
x=-2
Step-by-step explanation:
2x+4-4=0-4
2x=-4
x=-2
 
        
                    
             
        
        
        
7.6 x 10^2 that's the answer
        
                    
             
        
        
        
So, the rate per 7 minutes is 7:196
To find the unit rate (how many spins per minute) we need to divide the 196 by 7.
196/7 = 28
The unit rate is 1:28
At this rate, the unicycle makes 420 revolutions per 15 minutes. We find this by 28 * 15 = 420. 
 
        
             
        
        
        
I got -10 
1. create two ordered pairs based on the data so (1, 90) and (3, 70)
2. plug into the slope formula so (70 - 90)/(3 - 1)
then it's -20/2, which is -10