Answer:B=8
Step-by-step explanation:
 
        
             
        
        
        
<u>Answer:</u>
 -348
 -348
<u>Step-by-step explanation:</u>
We are given the following arithmetic sequence and we are to find the sum of its first 12 terms:
1, -4, -9, -14, . . .
For that, we will use the formula for the sum of the arithmetic mean:

We know the value of the first term ( ) but we need to find the value of
) but we need to find the value of  . So we will use the following formula:
. So we will use the following formula:



Substituting these values in the sum formula to get:

 -348
 -348
 
        
                    
             
        
        
        
Answer: 3 ft. and 2 inches
38÷12=3.2
12×3=36
38-36
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation: 
Twice the serving of mashed potatoes is 2 x 10 = 20
If y is the number then y < 20
 
        
             
        
        
        
Answer:
20 degrees
Step-by-step explanation:
If BD is the angle bisector of ABC, then ABD must equal half of that. 40/2=20 degrees. Hope this helps!