Answer:
0.75 x 7 = 5.25
9-5.25=3.75
3.75/0.38=
9.86
round down because the rope has to be full
9 is your answer
Step-by-step explanation:
 
        
             
        
        
        
Its not in order its 2.34,9/4,2 3/4
        
             
        
        
        
Answer:
8y^2 (y+2)
Step-by-step explanation:
8y^3 + 16y^2
both terms contain an 8 and a y^2 so we can factor them out
8y^2 (y+2)
 
        
                    
             
        
        
        
Answer:
12
Step-by-step explanation:
5(x-6)=2(x+3)
multiply 
5*x and 5*6. 2*x and 2*3
5x-30=2x+6
minus 5x and 2x
3x-30=6
add 30 to 6
3x=36
divide both sides by 3 and the 3x cancels so 36÷3
x=12
 
        
             
        
        
        
So I'll walk through the first 2. Then please try the other ones and let me know if you run into more problems.
5m-6
If m is equal to 7, then replace m with 7.
5(7)-6
5x7=35 so the expression is now 35-6. Solve.
35-6=29
So that was the first one.
4m+t 
We just do what we do with the first problem.
4(7)+(2)
4x7=28 so the expression is 28+2.
28+2=28
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hope it helps
p.s. When there is subtraction, add. When there is division, multiply to cancel that out. When there is multiplication, divide to cancel. etc.