Answer: 3(9b+8)
Step-by-step explanation: Have a brilliant day of learning!-Lily ^-^
 
        
             
        
        
        
(x,y) = (r,16)
With this knowledge, plug in r for x, and 16 for y
16 = 2(r) - 4
Isolate the r, add 4 to both sides
16 (+4) = 2r - 4 (+4)
20 = 2r
Divide 2 from both sides
20/2 = 2r/2
r = 20/2
r = 10
hope this helps
        
             
        
        
        
Answer:
Total amount Silas and Raja has at first = $252
Step-by-step explanation:
Let, 
Amount Silas had = x 
Amount Raja had = y 
According to given statement;
x = 3y       Eqn 1 
x-84 = y+42     Eqn 2 
Putting value of x from Eqn 1 in Eqn 2 
3y - 84 = y+42 
3y-y = 42+84 
2y = 126
Dividing both sides by 2 

Putting y = 63 in Eqn 1 
x = 63(3) 
x = 189
Total amount they had = 189 + 63 = $252
Hence, 
Total amount Silas and Raja has at first = $252
 
        
             
        
        
        
Well there can be two different solutions for this but i will choose the easier one. Obviously one requires a system of equations which obviously will involve a lot of thinking and some good algebra solving in order for them to solve.
So we can just keep adding the distance as we know they are in different directions. 49 + 65 = 114. So 114 * 4.5 = 513 miles. SO after around 4.5 hours they will be 513 miles apart.
 
        
             
        
        
        
Yes because, if the building is 60 ft from the ground and the ladder is 70 ft,shouldn’t it escalate an extra 10 ft because this is technically an emergency and it can be considered to be used as a reason for safety purposes, if I’m not mistaken