Answer:
-2b^2+3b
Step-by-step explanation:
You just have to add like terms, which is the single numbers, the numbers with just the variables, and the numbers with variables that are squared.
X-9=-13 because the 9 doesn't do with any of the others after the variable
Answer:
I believe it is 14226.3
Step-by-step explanation:
You didn't say what shape it is or which ones are length, width, etc. But to find area(in most cases) multiply all the dimensions together.
Hope this helps!
Answer: x=5
Step-by-step explanation:


simplify

multiply 35 on both sides


x=5
Addition of a hydronium ion increases its concentration and the solution becomes more acidic, Therefore the pH decreases.