Sea level starting at 0 ft
That depends. (odd thing to say about a math problem, I know...)If there are parentheses anywhere then it changes. But, without any it's 5*-4^2=-80However, with parentheses it'll be positive ... 80
Descartes' rule of signs will not necessarily tell exact number of complex roots, but will give an idea. The Wikipedia article explains it pretty well, but here is a brief explanation:It is for single variable polynomials.Order the polynomial in descending powers [example: f(x) = ax³ + bx² + cx + d]Count number of sign changes between consecutive coefficients. This is the maximum possible real positive roots.Let function g(x) = f(-x), count number of sign changes, which is maximum number of real negative roots.Note these are maximums, not the actual numbers. Let p = positive maximum and q = negative maximum. Let m be the order (maximum power of the variable), which is also the total number of roots.So m - p - q = minimum number of complex roots. Note complex roots always occur in pairs, so number of complex roots will be {0, 2, 4, etc}.
How a fraction changes when you divide it depends on what you divide it by.
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When you do a save, the changes are applied to the document you originally opened. When you do a 'save as', you have to choose a name and a location where a copy of the document will be saved; this copy will have changes you are currently making to the document. You can then exit the document without saving, and your original document is unchanged. The copy that you 'save as' is still intact, with changes. You can also do a 'save as' without making any changes, just to have another copy of the document existing with a new name and/or location.
The 2 positive integers don't affect the sign. Every time you multiply by a negative number, the sign changes, so you have negative, positive, negative, positive... Since the number of negative numbers is odd, the end result is negative.The 2 positive integers don't affect the sign. Every time you multiply by a negative number, the sign changes, so you have negative, positive, negative, positive... Since the number of negative numbers is odd, the end result is negative.The 2 positive integers don't affect the sign. Every time you multiply by a negative number, the sign changes, so you have negative, positive, negative, positive... Since the number of negative numbers is odd, the end result is negative.The 2 positive integers don't affect the sign. Every time you multiply by a negative number, the sign changes, so you have negative, positive, negative, positive... Since the number of negative numbers is odd, the end result is negative.
Multiplying anything non-zero by a negative number changes the sign. A positive number multiplied by a negative number becomes negative. A negative number multiplied by a negative number becomes positive.
Accounting (including personal finances), population changes.
Negative.
In a given system, the electric field direction changes from positive to negative when the source of the electric field changes its charge from positive to negative.
Industrial Revolution has both the negative and positive changes in the history of Americans.
Nobody. Positive and negative electric changes exist from the earliest stages of the Big Bang.
both positive and negative effects were there. It killed economy, but brought social changes.
Neither. They are simply phase changes.
The changes in enthalpy, entropy, and free energy are negative for the freezing of water since energy is released as heat during the process. At lower temperatures, the freezing of water is more spontaneous as the negative change in enthalpy dominates over the positive change in entropy, making the overall change in free energy negative and leading to a spontaneous process.
Everyone is either affected in a positive or negative way
Mean step size - Number of positive and negative changes.