45. Using order of operations.
Answer: <u>17</u>
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Equation: 8 - (-9)
Keep Change Change (KCC): 8 + 9
8 + 9 = 17
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Each number in the code can be 1 of 10 numbers.
The total number of possible combinations is 10 * 10 * 10 * 10 = 10,000
The probability of getting 1234 would be 1/10,000
Every hour he bikes 13 miles:)))
It all depends upon what other things are given If hypotenuse is not given, in cosine or reciprocals are useless. In that case only tan and cot will be equally convenient if adjacent sides are given.
