What is the correct answer ? explain !

The correct answer is B. 10x - 12y

Step-by-step explanation:

To find this, we focus on just the like terms. So we break it down by the variable each time.

5x + 5x = 10x

-6y + -6y = -12y

z + -z = 0

So we put those answers all together to get 10 - 12y + 0 or just 10x - 12y

Step-by-step explanation:

It's D I believe.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%