The value of x = 0 which is none
        
             
        
        
        
Answer:
A
Step-by-step explanation:
he actually made a mistake in second step. Step 2 should be: 10y-2=18 and then 10y=18+2
we get 10y=20 /:10 
 y = 2
 
        
                    
             
        
        
        
Answer:
7
Step-by-step explanation:
24^2+b^2=25^2
576+b^2=625
<u>-576</u>        <u>-576</u>
b^2=49
√b=√49
b=7
 
        
             
        
        
        
Answer: 6 13/36 (B)
You add it by breaking wholes into parts.
 
        
                    
             
        
        
        
Answer:
Option C.
Step-by-step explanation:
The given given sequence is
1, –3, 2, 5, –4, –6
We need to find the pairs of consecutive terms of the sequence and their product.
Pairs of consecutive terms | Product
      1, -3                                  -3 
      -3, 2                                  -6
       2, 5                                  10
       5, -4                                -20
      -4, -6                                 24
Here the product of three pairs of consecutive terms is negative.
The number of variations in sign for the sequence is 3. Therefore, the correct option is C.