Answer:
Step-by-step explanation:
X/7=3/2  multiply by : 5
x = 21/2
 
        
             
        
        
        
Yes and no. A negative number and it's opposite are 'integers.' Yes, a negative and a negative multiplied together give you a positive. The two negative signs cancel out making it positive. But no, a positive and a positive multiplied together do not give you a negative. When you subtract positive numbers you can get a negative, but not when multiplying. If you were to do a positive times a negative it would be negative because the positive can't cancel it out. Example: -3 · -3 = 9. [] 3 · 3 = 9. [] -3 · 3 = -9. Other than the positive number part, the statement is true about the negatives. I hope that helped!
        
                    
             
        
        
        
USE SOCRACTIC IT WOULD REALLY HELP WITH THIS QUESTION
        
             
        
        
        
Answer:
Not a subspace 
Step-by-step explanation:
(4,0,0) and (0,4,0) are vectors in R3 with zero or one entries being nonzero, but their sum, (4,4,0) has two nonzero entries. 
 
        
             
        
        
        
Answer:
1.19
Step-by-step explanation:
You're trying to figure out what x is here. 
So you'll want to isolate the x. That means, get it alone. 
Since both sides are equivalent, when you subtract 2.45 from the x side, you also subtract it from the other side too. 
x = 3.64 - 2.45
x = 1.19