Answer:
n=10
Step-by-step explanation:
You need n to be 10 because: y^20= (y^10)^2
 
        
                    
             
        
        
        
Step-by-step explanation:
Conversion a mixed number 5 3/2
 to an improper fraction: 5 3/2 = 5 3/2
 = 5 · 2 + 3/2
 = 10 + 3/2
 = 13/2
To find a new numerator:
a) Multiply the whole number 5 by the denominator 2. Whole number 5 equally 5 * 2/2
 = 10/2
b) Add the answer from previous step 10 to the numerator 3. New numerator is 10 + 3 = 13
c) Write a previous answer (new numerator 13) over the denominator 2.
Five and three halfs is thirteen halfs
Conversion a mixed number 3 6/7
 to an improper fraction: 3 6/7 = 3 6/7
improper fraction: 3 6/7 = 3 6/7
 3 · 7 + 6/7 = 21 + 6/7 =27/7
 
To find a new numerator:
a) Multiply the whole number 3 by the denominator 7. Whole number 3 equally 3 * 7/7
 = 21/7
b) Add the answer from previous step 21 to the numerator 6. New numerator is 21 + 6 = 27
c) Write a previous answer (new numerator 27) over the denominator 7.
Three and six sevenths is twenty-seven sevenths
Multiple: 
13/2 * 27/7 = 13/2 · 27/7 = 351/14
 
 
        
             
        
        
        
length of pipe= 30m
Inside dia. = 1.2m
Outside dia. = 1.8m
Volume of concrete= (outside dia. - inside dia.)h
V= (pi)
v= [(3.14*0.9*0.9)-(3.14*0.6*0.6)]30
v= (3.3534-1.1304)30
v=(2.233)30 = 66.690m cube
since it's volume the answer 66.690 is in cubic meters.
 
        
             
        
        
        
Answer:
21+4
Step-by-step explanation:
3 times 7=21
3 times4=12
21d+4e
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:



Therefore, the coefficient of  is
 is  .
.