3x+12=18, 3x-12=-18
3x=18-12, 3x=-18+12
3x=6, 3x=-6
X=2, x=-2
24501.42m3 is the answers
Answer:
20 tests
Step-by-step explanation:
There are six different wires, and for each test the author picks three, this means that each test is a combination of three out of six wires (₆C₃) . The number of total combinations possible is given by:

20 tests are required to verify every possible pairing of three wires.
5 parts of Hi-C.
This is not my strong subject.
But I got this answer because 3=2=5
10-5=5
Try to find a good pyramid formula.