I think it's b . But I'm getting a different way.
I get c= -b+ 2h/A
I'm still working on it
Step 1.) Set up the equation
28 %
---- = ------
40 100
Step 2.) Multiply the cross products
2800 = 40x
-------- ------
40 40
70% = x
From the given problem, it says show how to make a ten to solve 13-7.
Subtracting 13 to 7 gets 6. In order to get a 10, subtract 10 by 6. 10-6 = 4.
So, you need to add 4 in order to make a ten.
Disclaimer: What do you by make a ten to solve 13-7?
