Divide (4^2+5x-19) divided by (x+5) using synthetic division

16+5x-19=5x-3

5x-3        | x+5
-5x-25       5
  
      -28
5x-3: (x+5)  =5 rest ( -28)

verify 5x-3=5(x+5)-28=5x+25-28=5x-3    true   

0.78 is what you get when you convert 78% to a decimal. You will take the percent sign off and add a 0. In front of it.

It will be the same thing with any other two digit number. Let’s say it is 23% and you want to convert it to a decimal, your answer will be 0.23

Hope this helps!!