Answer:
-21 = 6t
Step-by-step explanation:
3t - 7 = 5t
Subtract 3t from each side
3t-7-3t = 5t-3t
-7 = 2t
Multiply each side by 3 to get 6t
-7*3 = 2t*3
-21 = 6t
 
        
                    
             
        
        
        
3 Eggs: 4 times what equals 12? (We use 4 because its 1/4 or a quarter) 3 times 4 equals 12.
        
                    
             
        
        
        
Answer:
x≤ -7 or x≥ -4  
Step-by-step explanation:
There is a closed circle at -7 and the line goes to the left
x≤ -7  
There is a closed circle at -4 and the line goes to the right
x≥ -4  
Since they both can't be true at the same time it is an or
x≤ -7 or x≥ -4  
 
        
             
        
        
        
the sign would probably be a negative. imagine this - - - - - - and then + + +, cancel out the negatives and plus then you are left with more negatives than positive so the sign will take the negative sign.
 
        
             
        
        
        
If Sa=2πrh+2π v=π
v=π then the surface area is π
 then the surface area is π and volume is
 and volume is
 (rh-2h)/2r.
Given Sa=2πrh+2π =π
=π .
.
We have to find surface area and volume from the given expression.
Volume is basically amount of substance a container can hold in its capacity.
First we will find the value of v from the expression. Because they are in equal to each other, we can easily find the value of v.
2πrh+2π v=π
v=π h
h
Keeping the term containing v at left side and take all other to right side.
2π v=π
v=π -2πrh
-2πrh
v=(π h-2πrh)/2π
h-2πrh)/2π
v=π /2π
/2π -2πrh/2π
-2πrh/2π
v=h/2-h/r
v=h(r-2)/2r
Put the value of v in Sa=2πrh+2π
Sa=2πrh+2π *h(r-2)/2r
*h(r-2)/2r
=2πrh+2πrh(r-2)/2
=2πrh+πrh(r-2)
=2πrh+π h-2πrh
h-2πrh
=π h
h
Hence surface area is π h and volume is h(r-2)/2.
h and volume is h(r-2)/2.
Learn more about surface area at brainly.com/question/16519513
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