Solve the given equation.

s - 19 = 12

s=31

Step-by-step explanation:

hi again so what you are gonna do is find out the opposite of subtraction which is addition then you are gonna do the opposite..so add 19 and 12 together then your sum would be 31to check your answer you must subtract 31 from 19 and then you get 12so therefore s=31

hope you are getting a better understanding!

because 1.2 isnt half of 6 duh

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.