Which facts could be applied to simplify this expression? check all that apply. 5x + 3y + (-x) + 6z a. to add like terms, add the coefficients, not the variables. b. like terms are terms that contain the same variable, raised to the same powers. c.the simplified expression is 4x + 3y + 6z d. only combine terms which contain the same variable. f. the simplified expression is 5x + 3y + 6z

The answer is B, C, and D. Like terms are terms with all the same variable, so 5x and -x are like terms.

C is correct. If we add -x to 5x, we get 4x. The other numbers remain unchanged because they have no like terms.

D is correct. Applying the rule of like terms, which is that like terms are numbers with the same variable, only add together numbers with the same variable.

Hope this helps!

Options B, C, and D.

Step-by-step explanation:

We have to simplify the given expression given (5x + 3y + (-x) + 6z).

We will use the process as given below.

1) We will identify the like terms, we have to add or subtract.

2) Like terms are those, which have the same variable of the same degree.

3) We get the simplified expression by combining the same terms.

5x + 3y + (-x) + 6z = 4x + 3y + 6z

Therefore, Options B, C and D will be the correct options.

3/5 = 0.6 = 60%

60% of the total take Spanish.

That leaves 40% for the other languages.

1/4 of 40% is 10% that take German.

40% - 10% = 30% take French.