First we substitute, what that means in here is that 2(c +3)
Or minus I can't see the sign but what we do is we substitute 2 with c so that becomes 2c and 2 with 3 and that becomes 6 which gives us 2c + 6 = c-13
Now we can either add 13 on both sides or subtract 6 on both sides, we can do this because they are like terms even if they are negative because they don't have any variable behind it. We will add 13 because we do the opposite of the sign you are solving some get 2c + 19 = c now we subtract 2c on both sides and we get 19 = -1c and at the end we divide -1 on both side and we get -19 = c or
c = -19.
Answer:
No
Step-by-step explanation:
Look at the surface area of the box formular : S = 2lw + 2lh + 2wh
When l : length. w: with and h: hight
As we often considered strange, you can always multiply a whole number by a whole number and always get a whole number, and there is no decimal number about the 3 dementions like the boxes you have been describing so far. So It is impossible.
Answer:
300
Step-by-step explanation:
That would be 2.25 / 0.0075
= 300
Answer:
x=4
Step-by-step explanation:
4x + 7y= 51
We replace y by 5 and determine x.
4x+7×5=51
4x+35=51
4x=51-35
4x=16
x=4
Answer:
Step-by-step explanation:
We have the system of equations:
Let's solve by substituting. We know that 
, so we can substitute 
in as 
in the equation 
.
Simplify this down so that we have 
on one side of the equation:
Now that we know the value of , we can substitute it in to the equation 
to find .
Hope this helped!
