Which property justifies the first step in solving this equation?
x/5 + 9 = 11
x/5 +9 - 9 =11 - 9

a. subtraction property of equality
b. addition property of equality
c. substitution property of equality

What is the total surface area of this square pyramid?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question