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If the terms get bigger as you go along, the common difference is positive. If they get smaller, the common difference is negative and if they stay the same then the common difference is 0.

Q: How can you determine whether the arithmetic sequence has a positive common difference or a negative common difference?

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For any index n (>1) calculate D(n) = U(n) - U(n-1). If this is the same for all integers n (>1) then D is the common difference. The sign of D determines whether the common difference is positive or negative.

No, because if the positive was 8, and the negative was -4, the difference would be positive four.

no

If you have a negative and a positive, then all you have is a negative and a positive. If you want to talk about performing some arithmetic operation on a pair of numbers where each number has one of those signs, we can certainly discuss that. But you'll need to be much more clear in your question. A great start would be to specify which arithmetic operation you're interested in, and we can go from there.

one is positive, the other is negative

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could also be negative

For any index n (>1) calculate D(n) = U(n) - U(n-1). If this is the same for all integers n (>1) then D is the common difference. The sign of D determines whether the common difference is positive or negative.

In an arithmetic sequence the same number (positive or negative) is added to each term to get to the next term.In a geometric sequence the same number (positive or negative) is multiplied into each term to get to the next term.A geometric sequence uses multiplicative and divisive formulas while an arithmetic uses additive and subtractive formulas.

No, because if the positive was 8, and the negative was -4, the difference would be positive four.

No, because if the positive was 8, and the negative was -4, the difference would be positive four.

positive

No, a positive minus a negative can be either or positive or a negative.

When it comes to numbers (this question was asked in the "Math and Arithmetic" category), adding a negative number to a positive number always equals a negative number.

If you have a negative and a positive, then all you have is a negative and a positive. If you want to talk about performing some arithmetic operation on a pair of numbers where each number has one of those signs, we can certainly discuss that. But you'll need to be much more clear in your question. A great start would be to specify which arithmetic operation you're interested in, and we can go from there.

Doctors determine positive or negative blood types by testing for the presence or absence of a specific protein called the Rh factor on the surface of red blood cells. A positive blood type indicates the presence of this protein, while a negative blood type indicates its absence. This information is important for blood transfusions and pregnancy monitoring.

negative is below zero, positive is above

no