Only triangles , there isosceles if they both have two congruent sides & angles !
It is 13 miles between the Opera House and Bryan's home.
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
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Yes. One input results in one output. the last choice is correct.
every x value will product only one y value.