Answer: 
Step-by-step explanation:
To solve for b, we want to use the Pythagorean Theorem as given.
b and 7 are the legs, and 12 is the hypotenuse.
[exponent]
[subtract both sides by 49]
[square root both sides]

Now we know
.
Use the calculator in the app photomath
Answer:
ye that is the correct answer
Answer:
a
Step-by-step explanation:
graph show it If you put a number in for x then you can see the different