I ONLY HAVE THREE ATTEMPTS ON THIS ASSIGNMENT, AND I CANNOT FAIL.

Determine the approximate value of X.

A. 7.36

B. 18.85

C. 8.69

D. 20.47

 8.69 (read explanation)

Step-by-step explanation:

If the one above it is only 8 and x is slightly better it would make much more sense for it to be 8.69 try it, it sounds quit accurate.

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000

sounds & other waves originate from any vibrating object