Answer:
 6
-9
Step-by-step explanation:
-3(-2) + 0(-1) 
 4(-2) + 1(-1) 
 6 + 0 
-8 + -1
 6 
 -9
*don't forget to add brackets on each side of every calculation okay :) 
 
        
             
        
        
        
Answer: 
Step-by-step explanation:
Given : The total number of cards in a deck = 52
Number of red cards = 26
There are two types of red  cards : diamond and heart.
Number of diamond cards = 13
The probability that the first card is a diamond :-

Since diamond is also a red card.
Now, the total cards left = 51
The number of red cards left = 12
The probability that the second card is a red card (without repetition) is given by :-

Now, the probability of choosing a red card for the second card drawn, if the first card, drawn without replacement, was a diamond :-

 
        
             
        
        
        
Answer:
15 
Step-by-step explanation:
yes it is subtracting by 75-35 then we got the answer who got A in the science only
 
        
             
        
        
        
Add the one from the left to the 63 to get 64. Then divide both sides by 4 and get x^2=16. Take the square root of both sides to get x to equal 4.