Find the missing side. Round your answer to the nearest hundredth. х 28° 42 in in
1 answer:
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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.
Let's call this unknown number, x.
So we know that 4 and this number, x, are going to be added together and 6 is going to be subtracted from it. Therefore we can write the expression:
Since we cannot proceed any further without knowing either the value of x or what the expression equals, this is as simplified as it can be.