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If you multiply a negative by a negative is it a positive?
Yes, any time you multiply a negative by a negative, it automatically becomes a positive.
What will happen to the slope of a line if the line is shifted so that the y intercept increases and the x intercept remains the same?
The answer depends on the signs of the original intercepts.x negative, y negative: negative slope becomes less negative and could go positive.x negative, y positive: positive slope becomes greater.x positive, y negative: positive slope becomes less positive and could go negative.x positive, y positive: negative slope becomes more negative.For 1 and 3, the slope changes sign when the y intercept crosses the origin.
When you add a negative number by a negative number do you get a negative or positive number?
You get a positive number because a negative number reverses the other negative so it becomes a positive number.
What does it mean for a negative to be decreased by a negative?
It becomes less negative To explain. Lets take a negative, eg -5. If we decrease it by 1, it becomes -6 (where 1 is positive) Thus if we decrease it by -1, it becomes -4 (as the -1 is negative) Note that the final number could be positive, For example, if you decrease -5 by -6, you get +1
Are all whole numbers positive or negative?
All integers can be positive or negative, including zero. But zero on its own is neither positive nor negative. It is directly inbetween where one becomes the other.
If a resting potential becomes more negative what happens to the cell?
When the membrane potential becomes more negative it is being hyperpolarized. Remember the resting membrane potential is already at a negative state (~70mV). So if you are making a comparison of a membrane potential that is hyperpolarized in comparison to a resting membrane potential, the resting membrane potential is said to be more depolarized.When the membrane potential becomes more positive it is called depolarization.
What is the falling phase of action potential?
Hyperpolarization (the membrane potential becomes more negative)
What causes cell membrane to depolarize?
It's during the "rising phase" when the membrane potential becomes more positive.
Influx of Na plus till 70mV?
The electrical potential difference across a cell membrane (the resting potential) is around -65 mV, inside negative. In nerve cells (neurones) or muscle cells this potential difference is reversed during an action potential. Sodium (Na+) channels open and Na+ ions enter the cell down their concentration gradient. This entry of positive charge depolarises the membrane ie it cancels out the resting pootential and then reverses it, so the potential becomes positive inside and negative outside, giving a potential of about +50mV.
When three negative are multiplied is the product positive or negative?
It is a positive. When you multiply a negative and a negative, it becomes a positive, then you multipy the positive with the other positive
How do you add a negative by a negative?
you make it a positive because negative add negative becomes a positive
What happens when its a negative times positive?
Becomes a negative.
If your positive and negative number are the same does it become a negative number or positive number?
It depends on what you are doing to the two identical numbers. If you are multiplying them, it becomes a negative. If you are dividing them, it becomes a negative. If you are adding them, it will always be zero (e.g., 2+ -2 = 0, etc.). There are two ways to subtract. If you are subtracting a positive from a negative, the number remains negative. If you are subtracting a negative from a positive, or a negative from a negative, the negative becomes a positive and you just add from there.
What would happen to the membrane potential if a substance that makes the membrane permeable to ions is added to the cell?
If a subsance is applied to a cell that makes the membrane more permeable to ions, the interior voltage changes. If the interior voltage becomes more positive (say from Ð70 mV to Ð60 mV), this is called a depolarization. If the interior voltage becomes more negative (say from Ð70 mV to Ð80 mV) it's called a hyperpolarization.
Why is it when you multiply two negative integers that it is a positive answer?
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.
If you multiply a negative by a negative is it a positive?
Yes, any time you multiply a negative by a negative, it automatically becomes a positive.
Why when ions gain it becomes negative and when ion loses it becomes positive?
Electrons are negatively charged. When an atom gains an electron it gains this negative charge, and so it becomes negative. When it loses it again it has lost that negative charge and becomes more positive.
