) If x is a nonzero real number, is x–2 always positive, always negative, or positive or negative depending on whether x is positive or negative?
57,469 results

algebra
Could someone please help me with this? (1) If x is a nonzero real number, is x–2 always positive, always negative, or positive or negative depending on whether x is positive or negative? Explain your answer. 
algebra
) If x is a nonzero real number, is x–2 always positive, always negative, or positive or negative depending on whether x is positive or negative? Explain your answer. 
Math
If x is a nonzero real number,is x2 always positive,always negative,or positive or negative depending on whether x is possible or negative explain 
7th grade math
Which of these statements is true when you add a positive, nonzero integer and a negative, nonzero integer? A)The answer may be positive or negative. B)The answer is always negative. C)The answer is always zero. D)The answer is always positive. 
physics
What work is done by a friction force acting on an object? Select one: a. Always negative b. Always positive c. May be positive or negative depending on the choice of coordinate system d. Always zero 
college physics
What work is done by a friction force acting on an object? Select one: a. Always negative b. Always positive c. May be positive or negative depending on the choice of coordinate system d. Always zero 
math
Which statement is true? A.The sum of two positive integers is sometimes positive, sometimes negative. B.The sum of two negative integers is always negative. C.The sum of a positive integer and a negative integer is always positive. D.The sum of a positive integer and a ... 
Math
We are adding positive and negative numbers. The question is State positive or negative or it depends along with my answers. Are these correct? Positive + positive: positive Positive + negative: it depends Negative + negative: negative Positive – negative: positive Negative... 
Pre Cal
Use Descartes’ Rule of Signs to find the number of possible positive, negative, and nonreal roots for the equation, 4x^3+7x^2+7x+3=0 a. 0 positive, 0 negative, 3 non real roots b. 0 positive, 1 or 3 negative, 0 or 2 non real roots c. 0 positive, 1 or 3 negative, 1 or 3 non ... 
MATH PLZ
Which is true when a negative nuber is subtracted from a positve number? A.the difference is always 0 B.the difference is always positive C.the difference is always negative D.the difference could be negative or positive *i need examples to 
Decartes Rule of Signs
Could you explain to me decartes Rule of signs? Here are my questions: Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=7x^9+x^5x^2+6 choices are: a. 2 or 0 positive zeros,2 or 0 negative zeros b.2... 
Chemistry
I would really like to understand how to do these problems, because my exam is coming up in a few weeks. I still cannot comprehend how you can tell if a system is is positive or negative according to reaction. For #1, I presume it is E if it is spontaneous at all temperatures... 
Chemistry
I would really like to understand how to do these problems, because my exam is coming up in a few weeks. I still cannot comprehend how you can tell if a system is is positive or negative according to reaction. For #1, I presume it is E if it is spontaneous at all temperatures... 
mathcalculus
write the following absolute value functions as piecewise functions. i really not get how to do this f(x) = x i think im supposed to state as positive and negative but i not even know what that x means. i only guessing and saying that for positive it be a positive x and for ... 
mathcalculus
write the following absolute value functions as piecewise functions. i really not get how to do this f(x) = x i think im supposed to state as positive and negative but i not even know what that x means. i only guessing and saying that for positive it be a positive x and for ... 
phsics
throughout a time interval, while the speed of a particle increases as it moves along the xaxis, its velocity and acceleration might be: a) positive and negative B) negative and negative c) negative and positive D) negative and zero E) positive and zero 
Algebra II
PLEASE HELPPPPPP What are the possible numbers of positive, negative, and complex zeros of f(x) = x4 + 3x3 − 2x2 + 1? (6 points) Positive: 2 or 0; negative: 2 or 0; complex: 4, 2, or 0 Positive: 2, or 0; negative: 4, 2 or 0; complex: 4, 2, or 0 Positive: 2 or 0; negative: 2 ... 
Algebra 2
Which describes the number and type of roots of the equation x^3  4x^2 + 50x + 7 = 0? a. 1 positive, 2 negative b. 2 positive, 1 negative c. 3 negative d. 3 positive How do I figure this out? 
algebra 2
I don't know how to do this. Which describes the number and type of roots of the equation x^3  4x^2 + 50x + 7 = 0? a. 1 positive, 2 negative b. 2 positive, 1 negative c. 3 negative d. 3 positive. 
Math
Could someone please explain to me how you get answers when you add a negative number to a negative number or a positive number to a positive number or a negative and positive number added together, because my teacher tried explaining it to me, but I'm completly lost. The ones... 
Chemistry(Please check answers)
1) For a reaction delta Go is more negative than delta Ho. What does this mean? a. delta So is zero. b. delta So is negative c. delta So is positive d. delta So is negative if delta Ho is positive. e. delta So is negative if delta Ho is negative. I think that delta S is ... 
Algebra
A positive integer minus a positive integer is always positive. This statement is sometimes true. For example, 17 – 5 = 12, but 15 – 20 = –5. post five other statements about the addition and subtraction of positive and negative integers, and ask whether each is always ... 
Algebra 2
Which describes the number and type of roots of the equation x^3  4x^2 + 50x + 7 = 0? a. 1 positive, 2 negative b. 2 positive, 1 negative c. 3 negative d. 3 positive I know I asked this before but I'm going over it and I don't understand it. I got help from someone and they ... 
math
Need to find the real number. Someone performed a trade of 20,000 less than it made, this caused a negative trade balance. To represent the quanity as a real number when I know that a positive real number names the points to the right of 0 on the number line and negative ... 
Beginners Algebra
For each table, find the output value that corresponds to an input value of 0. Chart; Input Output; 5 (negative) 22 (positive) 2 (negative) 10 (positive) 1 (positive) 2 (negative) 4 (positive) 14 (negative) 7 (positive) 26 (negative) 
Math
When you multiply a positive number by a negative one, what is the sign of the answer? a. always negative b. always positive c. always the same sign as the larger of the two numbers d. always the same sign as the first of the two numbers I believe the answer is B 
Chemistry
Use this reaction for this question: 4NH3 (g) + 2O2 (g) 4NO (g) + 6H2 (g); H = 905 J. Which statement is true about the reaction above? A. G is negative at all temperatures. B. S is negative and G is positive. C. S is negative and G is negative. D. G is positive at all ... 
physics..
This seems easy and yet i'm skeptical if these are actually supposed to be difficult.. It asks for a lot. It's seems repetitive.. 1. a falling stone takes .30 seconds to travel past a window 2.2m tall. From what height above the top of the window did the stone fall? 2. (a) Is ... 
M.A.T.H.
Does a negative times a positive equal a negative? I already know that a negative times a negative equals a positive and a positive time a positive equals a positive. So what's negative and positive? Please help me. Thanks. 
PreCalc
I know about Descartes Rule but I don't really get how to figure this outPlease check my answers I don't get this one find number of possible positive and negative real roots of f(x) = x^4x^3+2x^2 + x5 I think there are 3 sign changes so there are 3 positive but I get ... 
Literature
'Read each quotation. Decide whether the capitalized word has a positive or negative meaning.' 11. "...ABANDONMENT, except for memories, was the common thing..." negative 12. "At the moment i first saw him, he was being HANDCUFFED and shoved into a police truck." negative 13... 
math
Instructions: Tell whether each expression represents a positive number or a negative number when m and n are negative. problem: n/m If both m and n are negative, then both m and n (numerator and denominator) are positive. What does that tell you about the fraction? 
Calculus Help
Based on the following table of values for the function w(t), answer the questions below. t= 100 110 120 130 140 150 w(t)= 2.6 7.3 12.7 19 26.1 34.1 a) Which of the following best describes the derivative of w(t)? A. changes sign B. always positive C. always negative b) Which ... 
Math
Tell whether the difference between the two integers is always, sometimes, or never positive. 1)Two positive integers. Never 2)Two negative integers. Sometimes. 3)A positive integer and a negative integer. Sometimes. 4)A negative integer and positive integer. Sometimes. Is ... 
Math
Tell whether the sum between the two integers is always, sometimes, or never positive. Two Positive Integers: Sometimes One Positive and one negative integer: Always Is it right? 
science question
Histones interact with DNA at specific loci because DNA has phosphate functional groups. This interaction occurs because histones have a net _____ positive charge, which derives from their ______ residues, and interact with DNA because of its net _______ charge. a. negative, ... 
math
is a negative times a negative ALWAYS positive? or can it be negative as well? 
Begginers Algebra
For each table, find the output value that corresponds to an input value of 0. Chart; Input Output; 5 (negative) 22 (positive) 2 (negative) 10 (positive) 1 (positive) 2 (negative) 4 (positive) 14 (negative) 7 (positive) 26 (negative) *I WANT ONLY WANT TO KNOW THE VALUE/... 
Begginers Algebra
For the table, find the output value that corresponds to an input value of 0. Chart; Input Output; 5 (negative) 22 (positive) 2 (negative) 10 (positive) 1 (positive) 2 (negative) 4 (positive) 14 (negative) 7 (positive) 26 (negative) *I WANT ONLY WANT TO KNOW THE VALUE/... 
Pre Algebra
how do i do to get the answer for negative 12 + possitive 4+negative(8) You want (12) + 4 + (8) This is the same as 12 + 4 8 If you add the first two number you get 12 + 4 = 8 Then add this to the last number to get 8 + 8 = 16 negative + positive = negative and ... 
algebra1
tell whether each statement is sometimes, always, or never. 1) the value of the expression 2 + n is less than value of n. answer always. 2) when b is positive, the expression b + (b) is equal to 0. answer always. 3) when x is negative, the value of the expression x+1 is ... 
Chemistry
1)During an endothermic reaction, total energy A. decreases. B. increases. C. stays the same. D. cannot be determined. 2)The enthalpy of formation of an element is A. negative. B. positive. C. zero. D. negative or positive, depending on which element. i think number 1 is A for... 
Math plz check if correct
In multiplication, if one term is negative and one term is positive, the result will always be ______. A. equal to zero B. negative C. inverted D. positive my answer is A 
Chemistry
Assuming the dissolution of borax in water is a spontaneous reaction, do you expect the change in enthalpy to be positive or negative or are both signs possible? Explain your answer A. Neither, enthalpy does not change, the positive entropy for the dissolution, leads to –G(G... 
Chemistry
Calcium chloride, CaCl2, is used in “hot packs”. When the solid is mixed with water, the products are favored. Based on this information, which of the following is true for the values of ΔH and ΔS for the dissolving process? CaCl2 (s) → Ca2+ (aq) + 2 Cl&#... 
Algebra
Tell whether the sum is positive, negative, or zero. Explain n is positive and m is negative. n + (m) is ? 
Algebra
Tell whether the sum is positive, negative, or zero. Explain n is positive and m is negative. n + (m) is ? 
microeconomics
Fact 1: "The substitution effect(SE) must ALWAYS be negative (i.e. goes in the opposite direction to the change in PRICE). The income effect(IE) can be either positive or negative." Fact 2: "SE and IE can go in the same direction or they can go in opposite directions... 
Calculus
Find the intervals on which y=1/(x^2+1)^2 is increasing and decreasing. find the first derivative which is 4x/(x^2+1)^3 you should know that if the first derivative is positive, then the function is increasing and if it is negative, the function is decreasing. Now by ... 
Urgent Calculus Help
Based on the following table of values for the function w(t), answer the questions below. t and w(t) are a table with the following values: (100,2.6), (110,7.3), (120,12.7), (130,19), (140,26.1), (150,34.1) a) Which of the following best describes the derivative of w(t)? A. ... 
chemistry
Free Energy and Temperature A certain reaction is nonspontaneous at lower temperatures but becomes spontaneous when the temperature is raised sufficiently. For this reaction, S is positive. S is negative. H is negative. G becomes positive at higher temperatures. G is always ... 
algebra 1
4. Given the irrational number .14147…. choose an inequality which approximates to the 4th decimal place. a) .14 < x <.15 b) .141 < x < .142 c) .1413 < x < .1414 d) .1414 < x <.1415 B? 6. Choose an inequality to match this description: The height E of... 
math
I need a definition for this constant rate of change when graphing in mathematics and for Positive and Negative correlation and also what the pattern is in this a) 1000, 100, 10, 1 I'll give you a definition for positive and negative correlation. Correlation is a linear ... 
Math
i^6 = (i^2)^3 = (1)^3 = 1 The square, not the square root of 1 is 1. :) B.t.w., can you prove that 1 times 1 is 1? Hint, try to prove first that for any number X: 1 times X equals X How do you find the square root of 1? The square of any real number is alwayspositive. ... 
Science Question for Lance
Histones interact with DNA at specific loci because DNA has phosphate functional groups. This interaction occurs because histones have a net _____ positive charge, which derives from their ______ residues, and interact with DNA because of its net _______ charge. a. negative, ... 
math
when you multoply a positive number by a negative exponent would the answer be positive or negative 
Adult Development and life Assesment
Your instructor asks you to compare positive and negative reinforcement and explain your conslusions in class. what will you report . Positive reinforcement increases the frequency of responses and negative reinforcement decreases the frequency of responses. 2. Neither ... 
math
describe the situation from the veiwpoint of each person. during a year a person saves 12oo dollars and another person spends 500 dollar. which real number corresponds to saves 1200 dollars. type a negative number with a negative sign, or type a positive number with no sign. ... 
Physics
A positive charge of 3.0e6 C is pulled on by two negative charges. One, 1.9e6 C, is 0.045 m to the north and the other, 3.7e6 C, is 0.030 m to the south. What total force is exerted on the positive charge? F=kqq/d^2 You would have to find the F exerted by each. The first ... 
chemistry
For a particular reaction delta G is more negative than delta H. This means that a. delta S is zero. b. deltaS is negative c. delta S is positive d. delta S is negative if delta H is positive. e. delta S is negative if delta H is negative. i thought it was c? 
science
Examples of positive, negative and neutral friction? We always learned about friction as either being positive (tires gripping the road, brake friction for stopping etc.) or negative friction (causing wear or heat as in a bearing or engine due to parts moving against each ... 
PHYSICS I NEED MAJOR HELP PLEEEAAAAAASSSSSSSSSEEEE
If velocity is positive and increasing then... displacement is.... acceleration is.... If displacement is positive and increasing then...... acceleration is...... velocity is..... If acceleration is positive and increasing then......... displacement is....... velocity is... 
math
can someone give me proof that a negative number times a negative number is a positive number I've always been told this in like seventh grade that it is but havne't been given any proof 
Chemistry
Consider each of the following reactions and decide whether the standard entropy change for the reaction will be, (a) Positive; or (b) Very close to Zero; or (c) Negative. Matching pairs N2 (g) + 3 H2 (g) = 2 NH3 (g) Mg (s) + CO2 (g) = MgO (s) + CO (g) C6H12O6 (s) + 6 O2 (g... 
policial science
I have to do an interview so can you guys help me out answering these questions? I need atleast 2 person's oppionion 1 do you agree with the Bush Administration policy of spreading Democracy you and the world. 2 Do you how Bush agree w. handling the war in Iraq? 3 Positive ... 
Math 7 Help!
1. negative integer is less than positive integer somtimes, always or never My answer/think: sometimes 2. A negative integer is less than another negative integer somtimes, always or never My answer/think: sometimes 3. Absolute value is the number of places away from zero ... 
Chemistry Dipole Moments
How do you tell which end of a polar bond is positive or negative? My book says that a molecule such as Hf has a center of positive charge a center of negative charge. But in SO, how do you tell which end is positive, and which is negative. 
Discipline Question PLZ HELP
Which statement about positive and negative attention is true? A. Giving a child negative attention will create a wellrounded adult who is confident B. A child who seeks positive attention will never try to get negative attention. C. Positive and negative attention must be ... 
PreCalc/Trig
Please check the first and help with the secondthank you Find all possible rational roots of f(x) = 2x^4  5x^3 + 8x^2 + 4x+7 1.I took the constant which is 7 and the leading coefficient which is 2 and factored them 7 factored would be 7,2 2 factored would be 2,1 used 7 as ... 
Biology
Typically we talk about blood types as Bpositive or ABnegative and so forth. The positive and negative part of the blood type is determined by a completely separate gene (the Rh locus). The ABO locus and the Rh locus are inherited independently, like pea shape and pea color... 
human Genetics
Typically we talk about blood types as Bpositive or ABnegative and so forth. The positive and negative part of the blood type is determined by a completely separate gene (the Rh locus). The ABO locus and the Rh locus are inherited independently, like pea shape and pea color... 
math
when adding and subtracting integers does 2 negatives equal a positive? And does 1 positive plus 1 negative number equal a negative? 
Algebra II
State the number of positive real zeros, negative real zeros, and imaginary zeros for g(x)= 9x3 7x2+10x4. Since there were 3 sign changes I have 3 positive real zeros. For g(x)= I have 9x37x210x4. There were no sign changes so I have no negative real zeros. The total ... 
phisycal sciences
Which of the following properties did Rutherford use in his experiment? A. the negative charge of the alpha particles and the random distribution of protons B. the negative charge of the alpha particles and the positive charge of the gold foil C. the positive charge of the ... 
math
An exponential function is written in standard form: y = x + c. Which statement is NOT true? A) b can equal 1 B) b must be greater than 0 C) c can be negative or positive D) x can be negative or positive its A? 
Statistics
The algebraic sum of the derivations of a frequency distribution from its mean is i) Always positive ii) Always negative iii) Zero iv) A non zero number 
physics
Will the work done by friction on an object that moves through a positive displacement be positive of negative??? negative 
Physics
Two spheres of charge q1 and q2 that are equal in magnitude (i.e. q1 = q2) are attached by a spring with a constant k = 1440kg/s2 and a rest length of x0 = 83.0cm. We take negative values of Äx for compression and positive Äx values for expansion. Knowing that q1 is ... 
chemistry
Consider the reaction shown: 452 kcal + 4 PCl5 (s) ¨ P4 (s) + 10 Cl2(g) This reaction is ________ because the sign of ƒ¢H is ________. A) exothermic; neither positive nor negative B) endothermic; positive C) endothermic; negative D) exothermic; positive E) exothermic; ... 
Chem
Consider the reaction shown: 452 kcal + 4 PCl5 (s) ¨ P4 (s) + 10 Cl2(g) This reaction is ________ because the sign of ƒ¢H is ________. A) exothermic; neither positive nor negative B) endothermic; positive C) endothermic; negative D) exothermic; positive E) exothermic; ... 
Algebra 1
Write a rule for a nonlinear function such that y is negative when x = 1, positive when x = 2, negative when x = 3, positive when x = 4, and so on. The entire problem confuses me. I have no idea what its even asking besides it wants an equation. 
Science
Use the electron theory to explain how one object can be negatively charged and another can be positively charged. help If electrons are negative, removing them will leave a net positive charge (net meaning fewer negative electrons than postivite protons). Remember, in normal ... 
discret
Determine whether these are valid arguments. a. If x is a positive real number, then x2 is a positive real number. Therefore, if a2 is positive, where a is a real number, then a is a positive real number. b. Ifx2 ≠0,wherexisarealnumber,thenx≠0.Letabearealnumberwitha2 ≠0;... 
tats
No(Did not lie) Yes(lied) positive test result 15(false positive) 42(true positive) negative test result 32(true negative) 9 (false negative) Refer to table and assume that one of the 98 test subjects is randomly selected. Find the probability of selecting a subject with a ... 
MATH
1. Which of these numbers can be classified as both real and rational? 1/2 1.016879413894 Square root: 5 0.89089908999 2.Which is both a real number and an integer? Square root 7 0.15 15 1/3 3. What is an example of an irrational number? Sqre root: negative 16 sqre root: ... 
English I
Romeo and Juliet In three (or less) paragraphs discuss whether Shakespeare alludes to night in a positive or negative way. Noting as may instances you can d=find where the word night appears then determine whether the word has a positive or negative connotation. Thanks in ... 
elecTRICITY
A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one? 
Chemistry (spontaneous reaction)
Which of the given conditions leads to a negative free energy value (spontaneous reaction)? 1. Highly positive enthalpy and highly negative entropy 2. Slightly negative enthalpy and highly negative entropy 3. Highly positive enthalpy and slightly positive entropy 4. Highly ... 
chemistry
A reaction will be nonspontaneous under all conditions when a. delta G is negative b. delta H is negative and DS is positive c. delta H is positive and DS is negative d. delta H is positive independent of the value and sign of DS e. delta S is positive independent of the value... 
college algebra
if you have a problem where you are multiplying numbers with exponents (both positive and negative) and your answer ends up with a negative exponent what is the reason you make a fraction out of it and put it on the bottom as a positive? why cant you have a negative exponent ... 
physics(electricity)
A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one? 
simple PHYSX!
A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one? 
Physics
The direction of an Electric Field is the direction a negative test charge will move in the field a positive test charge will move in the field either a positive or a negative test charge will move in the field*** the test charge may be either negative or positive The ... 
Decartes Rule
Can you please check my work? Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=7x^9+x^5x^2+6 This is what I did: There are 2 sign changes f(x)=7(x)^9+(x)^5(x)^2+6 There are 2 sign changes So... 
History
The Western presence in Africa left a legacy that: A. was entirely negative. B. disappeared immediately when the colonial powers withdrew. C. was overwhelmingly positive in its impact. D. mixed, with both positive and negative results. Answer: D 
Math
Is n always, sometimes, or never a positive number? Explain. I don't know what they mean by n  is a negative number? 
Chemistry
For a reaction that has an equilibrium constant of 9 × 10–9, which of the following statements must be true? A) ∆G° is positive. B) ∆G° is negative. C) ∆H° is negative. D) ∆H° is positive. E) ∆S° is positive. 
physics
which of the following situations are impossible : A) velocity negative, acceleration positive B) velocity positive , acceleration negative C) velocity increasing, acceleration negative D) velocity decreasing , acceleration zero E) velocity negative , acceleration negative 
physics
Two charges are fixed in place with a separation d. One charge is positive and has nine times (n = 9) the magnitude of the other charge, which is negative. The positive charge lies to the left of the negative charge. Relative to the negative charge, locate the two spots on the... 
Physics(Please check)
There is a PV diagram with ABC and the cycle is moving clockwise. segment AB is isobaric BC is isochronic AC cannot be determined The delta U for this is zero and the W=positive. The last questions asks if the heat flow Q is positive, negative, or zero and the answer given is ...