520, na What is the common difference of the following arithmetic sequence? 13,
*-7, -27,-47

-20

Step-by-step explanation:

- 47 - -27 = -20

take one term and subtract the one right before it from it for the common difference.

4x and 6y

im not sure though

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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