-3x+24y-36 . You notice that the GCF =3 (that means the number that divides all factors)
3( - x + 8y -12) or you can put the "-" sign outside the parenthesis, but mind you , you will have to change all signs in the parenthesis:
-3( x - 8y +12)
Answer:
The square root of -1 is i
18.2 divided by 18 is 1.011
Z score=(data value-mean)/standard deviation
z=(90-100)/15=-0.6666666667
He is wrong because 12:55 is one hr and you still need to get to 1:25 but he only got to 1:01 so he did not get the correct answer