Posotive=120. Negative= -600
Answer:
pythagoras theorem
![a^2+b^2=c^2](https://tex.z-dn.net/?f=a%5E2%2Bb%5E2%3Dc%5E2)
so we have a and b
12 and 9
so ... ![12^2+9^2 = 225](https://tex.z-dn.net/?f=12%5E2%2B9%5E2%20%3D%20225)
take the square root to find c, since 225 is c^2
so √225 = c = 15
5a(b-c)=d. Here, we are trying to isolate the variable b.
Divide both sides by 5a: b-c=d/(5a)
Add c to both sides: b=
Answer:
where is the rest of the question?
Step-by-step explanation: