Answer:
<u> BC = 10 and AD = 30</u>
Step-by-step explanation:
In figure-1 , AB = CD ,BK ⊥ AD,  AK = 10,  KD = 20.
Since, line AD is sum of AK and  KD, then
AD = AK + KD
AD = 10 + 20
AD = 30
Since, BC ║AD and BK ⊥ AD then similarly we construct CL ⊥ AD
 so, BC = KL and AK = LD
KL = AD - LD
KL = 20 - 10
KL = 10
Since, BC = KL then BC = 10
Hence, <u> BC = 10 and AD = 30</u>
 
        
             
        
        
        
Answer:
(a)31.42 inches
(b)942.48 Square Inches
Step-by-step explanation:
Given a sector of a circle with the following dimensions:
Radius of the circle =60 inches
Central Angle of the sector =30° 
(a)Arc Length
Arc Length 

(b)Area of the sector
Area of the sector 

 
        
                    
             
        
        
        
Answer:
77
Step-by-step explanation:
Rate as BRAINLIEST
x + 9y
we plug in x and y
5+9(8)
=5+72
= 77
 
        
                    
             
        
        
        
Answer:
r=3
Step-by-step explanation:
- The equation of a circumference is  . .
- Then , in this case  , and then to know the value of r we just simply have to calculate the square root of 9, which is 3. , and then to know the value of r we just simply have to calculate the square root of 9, which is 3.
 
        
             
        
        
        
This is called a difference of squares which always factors according to the rule for factoring the difference of squares....
(a^2+b^2)=(a+b)(a-b)  in this case:
9w^2-16 so
(3w-4)(3w+4)