Question

Find RS. A. 5 B. 10 C. 9 D. 12

Answer 1

RS = 5

Explanation:

To find x use the equation 2x - 6 + 1 + x - 4 = 18

When you solve this x should equal 9

To find RS plug in x in (x-4)

9 - 4 (5)

Answer 2

5 (Answer A)

Explanation:

From the diagram we know that 2x - 6 + 1 + x - 4 must equal 18.

Then 2x - 6 + 1 + x - 4 = 18. Combining like terms, we get:

3x - 5 - 4 = 18, or 3x - 9 = 18

Then 3x = 27, and so x must be 9.

Then the length of RS is 9 - 4 = 5 (Answer A)