Jake1214

Not really for homework help, but just for curiousity. Is there a way to distinguish whether the graph is a parabola or a hyperbola if you do not know the equations and one side of the hyperbola is missing (so there's just one U shape) by restricting the...

17 years ago

Nice trick there tchrwill. But too bad it doesn't work if the question ask for an even number of consecutive numbers, you know, like ask for 4 consecutive instead of 3, or 5 or 7 or any odd number.

17 years ago

That formula above helps you determine the length of a RIGHT TRIANGLE if you know the other two lengths.

17 years ago

Veronica must be very frustrated. I think he/she (who knows) knows caps mean shouting. But her, you looks like you made good progress. At least you got 7 out of 9 correct but you shouldn't skip #7, partial credit is always rewarded in math even if you don...

17 years ago

Yeah, get supports and evidences. I'll tell you my opinion on this argument, and helpfully that stimulate your ideas. One way of doing this is to start a survey and ask people their opinions. I think pupils should have homework because 1) it lets them kno...

17 years ago

indeed it is +6. From this compound, there are several things you can get out from it: The Iron must be Fe(III) and not Fe(II). The net charge = 0 so 2Fe(III) = +6 so 3(SO4)must = -6 so (SO4) must = -2 Oxygen = -2 because it only contains 6 valence electr...

17 years ago

CoCl2 + 2NaOH --> Co(OH)2 + 2NaCl There ya go, it has a name for this reaction but I forgot... it's a composition reaction or something... don't quote me on that.

17 years ago

I just remember now, it's called a DOUBLE DISPLACEMENT REACTION, not composition.

17 years ago

Mg3(PO4)2 + 3Pb(NO3)2 --> 3Mg(NO3)2 (s) + Pb3(PO4)2 (aq) I think that's how you do it, just an ordinary double displacement reaction. To be honest, I just use my instinct to say the magnesium nitrate is solid and the other is aqueous... I can't remember,...

17 years ago

Oh yeah, I forgot the NET IONIC thing :(. I took this inorganic class like 4 years ago.

17 years ago

then you have a very small circle or a very large circle depend on the value of x and n...?

17 years ago

Wavelength is the length from one crest (peak) of the wave to the next crest or from one trough (the bottom peak) to the next trough. Amplitude is the height of the wave, not the length. There's not necessary a relationship between wavelength and amplitud...

17 years ago

divide pi and r^2 on both sides of the equation.

17 years ago

0.15x=230 Transferring into words: 15% of the original price is equal to 230 dollars.

17 years ago

The word "line" is vague... you need to be specific. A line can be a segment, which has an end or a ray which never ends. Hope I answered your question.

17 years ago

x^2 - 4 = 2x-10 x^2-2x+6 = 0 There you go... solve by factor or that quadratic formula.

17 years ago

Small sedan will experience a larger force because the truck is heavier (more mass and more momentum if they both travel at equal velocity) so it's not going to move much from the collision.

17 years ago

I'm not sure what you meant by mathematical processes... but maybe measuring their velocities and times and then do a calculation on their accelerations? You can also apply math to find out their gasoline utilization efficiency. Measure how far a car can...

17 years ago

All organisms are constantly evolving. What they evolve to or what trait or characteristic they will develop in the future is uncertain and hard to predict in most cases. However, according to Darwin, in short-term evolution, we can predict that organisms...

17 years ago

Hehe, I didn't have to take ACT or SAT or anything while I was in high school. I don't know this is an option in any other states, but in Minnesota, we have a Post Secondary Program (PSEO) where you can attend college during your junior and senior years s...

17 years ago

Yeah, that's a bit confusing. Here is what I think they're trying to say: -Because unmethylated bacteriophages will be degraded by the restriction enzymes found in bacteria, natural selection will favor those bacteriophages that have methylated DNA sequen...

17 years ago

Introduction, hypothesis, data, result, conclusion.

17 years ago

Distill water has pH = 7 and NaOH is a strong base (pH > 7)... if you mix NaOH with water, it will neutralize some of the base (decrease the pH to be closer to 7) and thus contaminate the NaOH solution.

17 years ago

aqueous solution.

17 years ago

Not sure... but if I have to guess, I'd say positive directional selection because 5 or 6 eggs seem like a big number. Positive directional selection favors those have higher trait values, in this case, they produce more eggs, thus have higher fitness tha...

17 years ago

The number of all the elements on the left side of the equation are equal to the number of the corresponding elements on the right side of the equation, thus no additional or less atoms are created nor destroyed. For example, in this carbonic acid reactio...

17 years ago

Fe2O3 + 3CO --> 2Fe + 3CO2 This one is difficult, took me about 10 minutes, but it's pretty simple in a way that you just plug in number and do trial and errors...

17 years ago

2=2x+4 -2=2x -1=x One solution?... if I read the question correctly.

17 years ago

Yeah, I think you get the idea. I just want to make sure your answer mean I/(Pr)=t not (I/P)r = t. Again, I think you got it right, but the way you typed your answer on the computer makes it look like (I/P)r = t, which is wrong.

17 years ago

...find the slope? I'm not sure what you don't understand here. I mean, the vertex coordinates are given on the diagram right? Then it's easy. Just find the slope on each side and if the slope on both sides are the same then that proved they're parallel a...

17 years ago

Lol! Capillaries?

17 years ago

Um... I thought any non-whole number is considered a prime number so I say yes.

17 years ago

Even I got my biology degree, I don't feel like I know most of the questions posted here. I just don't want to give a guess as an answer so I usually choose not to answer them. However, if I encountered questions that I know how to deal with, I will answe...

17 years ago

Yeah, half of 66 is 33.

17 years ago

sq24 = sq4 x sq6 = 2 x sq6 sq = square root of

17 years ago

Can you type out the problem? Maybe then people can actually help you. By reading what you said it sounds like it's sq (x^2/x-6) = 0... but I guess that's not what the problem looks like, be sure you indicate where the parentheses are in your problem.

17 years ago

When you put the function into your graphing calculator, just make sure you can see the whole window so you can see all the turns. Whenever you see your graph intersects with the x-axis, you have 1 zero... so just go ahead and count how many times it inte...

17 years ago

=[(x+2)^2 - 2(x+2)] - [(2)^2 - 2(2)]/2 =x^2+4x+4 - 2x-4 - (4-4)/2 =x^2+2x - 0 =x(x+2) = 0 or -2 I have the x+2 part of your "correct answer", but I also got the "x" in there. That's the answer I came up with, if you don't understand how I arrive my answer...

17 years ago

Let me first convert them into the same y = mx + b form: -->y = -(3/4)x - 1 -->y = -(3/4)x + 5 Okay, slopes are the same so you know they're parallel to each other. Looking at the y-intercept you know that one has a coordinate of (0,-1) and the other has...

17 years ago

Hmm... that should be the same answer because f(2) = 0 and 0 divide by any number is 0 and "x" cannot be zero.

17 years ago

-6t=12 t= ?

17 years ago

9 and 15 are the numerators 12 and ? are the denominators Start the problem by setting up an equation by multiplying the numerators with the denominators like this: 9 x ? = 12 x 15 Now just solve for ?

17 years ago

Where is the /x comes from on your x^2+2x/x... you were /2 up there on the above step... and even if the problem is f(2)/x... your f(2) = 0, that mean you get 0/x which equals 0, thus leaving you only x^2+2x on the left side, which equals x(x+2). Basicall...

17 years ago

Your question has already been answered... check your previous posting before you post another one please.

17 years ago

I don't think anyone of us can give you that answer without knowing the method of how your teacher keep tracks of score. For example, does your teacher treat all points weight equally? This is when 1 point in a test is equal to 1 point in the assignments...

17 years ago

Oh, and now you said you are at 56.7% I can give a rough prediction with the if...then statements for you, that way you don't have to ask your teacher and dig out all your tests to tell me the results and stuffs. If you do not do anything different than w...

17 years ago

8<w+3<10 8-3<w<10-3 5<w<7 Your answer should be (5,7) --> this mean any numbers between 5 to 7 except 5 to 7 themselves.

17 years ago

Let's see if this will help you visualize what Bob said: * = 1 valence electron H = Hydrogen There are 2 hydrogens atoms: H* and H* And they (the atoms) form a covalent bond by sharing the electrons: H**H --> now each hydrogen is much happier with 2 valen...

17 years ago

Looks like it's D, but B is quite goofy. If they mean the mass of the elements in the reactant side only, then I think it's true, of course that also including the number of moles of each element in the balanced equation. Just a side note, in a real world...

17 years ago

Is your submarine rectangular? If so, just multiply the two numbers... I can hardly imagine you would have to do calculus with the information given for a more accurate area of the submarine's actual shape.

17 years ago

Well... as you said, you get v^16... so would it be 9+7=16 or 9*7=16?

17 years ago

Good job! Sorry I posted the same thing twice because my net froze.

17 years ago

I suppose you are missing the "x" in your functions. Just graph it as you normally would, which mean graph y = (-3/2)x + 8. Then pick on any coordinate point that's NOT on the line for testing, just FYI, I always use the point (0,0) just because it makes...

17 years ago

I always put the equation in the slope y-intercept form when I worked on these equations... some other people prefer other forms, which also works. However, I'll just show you my way since I know it best. So the form we want to translate to looks like thi...

17 years ago

1) There's no way to do this without knowing the volume of the myocyte, so I would recommend you to search the book or your notes, should be somewhere in there. Basically, you would approach this question by finding the volume of the actin molecule first....

17 years ago

16F=mg Solve for m. m*2.2 = weight in lb.

17 years ago

A. Find the slope (rise/run). Plug x and y into your equation with the slope to find the y-intercept and then you'll have your y=mx+b equation. B. Should look like a "V" shape open upward starting at the vertex at (0,0). Basically "x" can be any number an...

17 years ago

90 + (x-25) + (x+25) + (x-30) = 360 90 + x - 25 + x +25 + x - 30 = 360 60 + 3x = 360 3x = 300 x = 100 The concept of this problem is to recognize that ANY QUADRILATERAL (square, trapazoid, rhombus, rectangle...etc) have a total angle of 360 degrees, so yo...

17 years ago

1) Distribute ex: 2(5+x) = 2*5 + 2*x = 10 +2x 2)Combine like-term 3)Solve for h

17 years ago

I thought constant and control are the same thing. Something that you keep constant, which mean you don't change it. The opposite of that would be a variable, which mean it changes and usually that's what you're testing for.

17 years ago

On the step where you say y=-4y is where the problem is. Re-check that part and do it again. Everything else seems right except that you are not doing what the problem is trying to tell you to do. You are supposed to solve by graphing, but here, you are d...

17 years ago

x-ray? Lol

17 years ago

I did this experiment in my science class while I was in middle school: Fill a glass with water and then put a piece of cardboard on top of it and then slowly turn the cup upside down and ta-da, the cardboard will be able to hold the water from leaking ou...

17 years ago

Step one: combine like-term - put all the x on one side and all the whole number on the other side by addition/subtraction. Step two: get x on one side by division/multiplication. Ex: 3x+5=2x-3 Subtract 2x and -5 on each side of the equation 3x-2x + 5-5 =...

17 years ago

Alright thanks!

17 years ago

I meant, I was wondering that too, so thanks even though it isn't my question.

17 years ago

One to two

17 years ago

18 = 9 * 2 then sqrt 18 = 3sqrt2 sqrt a^7 = a^3 * sqrt a 27 = 9 * 3 then sqrt 27 = 3 sqrt3 sqrt a^8 = a^4 sqrt b^6 = b^3 Now just multiply the like-terms together.

17 years ago

... 3sqrt6 and sqrt2a^4? So you simplified the problem first as I said above and you get: 3(a^3)sqrt(2a) * 3(a^4)(b^3)sqrt(3) and then you multiply those 2 things together and you get: 9(a^7)(b^3)sqrt(6a)

17 years ago

Plug your 0 into the x in your equation and you get 1 = -1, which is false, which mean: no, the answer is not x = 0. Since you didn't show your work, I have no idea what you did wrong on your process... or maybe you just guess 0 and didn't do any work at...

17 years ago

.. 3sqrt6 and sqrt2a^4? So you simplified the problem first as I said above and you get: 3(a^3)sqrt(2a) * 3(a^4)(b^3)sqrt(3) and then you multiply those 2 things together and you get: 9(a^7)(b^3)sqrt(6a)

17 years ago

I haven't done chemistry for a while, but here's my best guess: M = mol/L so 0.120 M means there is 0.12 moles of Ca(NO3)2 in a liter. The question ask for 500 mL, which is half of a litter, so I would just divide 0.12 by two and get 0.06 moles of Ca(NO3)...

17 years ago

1) Find the volume: V = (4/3)(pi)(r^3) 2) Density = mass/volume There you go... that's all, 2 steps!

17 years ago

I vote for bent.

17 years ago

D --> London's dispersion force.

17 years ago

1g = 100 cg --> 0.25g x 100cg/g = 25 cg 1mL = 1 cm^3, 1L = 1000mL, you figure the rest out. 1 m = 100 cm, 1 m^2 = (100 cm)^2 = 10,000 cm^2, you figure the rest out. Good luck!

17 years ago

Um... I can't understand what you are trying to say. Please add the commas and periods to make it easier to read... maybe someone else can understand, but not me. Just pointing that out in case someone else has the same problem as me, no offense.

17 years ago

I just know that in order to be a ketone, this functional group looks like this C-C(O)-C so it must have at least 3 carbons to be a ketone... I don't know if you have to explain using eletronegativity or dipole...

17 years ago

LDH catalyzes the reaction between pyruvate and lactate. Pyruvate is important because it involves in glycolysis (glucose metabolism). Lactate is important because you can use lactate to quickly generate the energy you need during intensive exercising. Ho...

17 years ago

6(y^2-4) 6(y-2)(y+2)...

17 years ago

Ex: 1 2/3 Numerator = 1x3+2=5 Keep Denominator Answer: 5/3

17 years ago

12

17 years ago

1 and 31 because it is a prime #?

17 years ago

You sure you have it the right way (1 in = 0.01 in.) and not the other way around? The way you say it, Lin actually has to draw 100 times bigger than the actual size of the computer diode... usually when you drawing a miniature, you are drawing with the p...

17 years ago

I believe all these properties can be found easily just by typing it in the google search box... Example, I pasted this exactly as it is from a site I found: Associative Property of Multiplication The property which states that for all real numbers a, b,...

17 years ago

9, 18 and 27

17 years ago

First, convert your equations to y=mx+b form and then you can graph each of them into your graph individually. Where the two lines intersect, that's your answer.

17 years ago

Try to multiply first equation by 3 and second equation by 2. You will end up with 6x and -6x, you can eliminate those and then use the substitution method to find y.

17 years ago

Total cookies baked = 2*20 + 10 = 50 cookies 50x = 797.30 x= $15.95/cookie... wow that's expensive! Okay... this is actually the equation of how much each cookie cost and assuming that the bakery sold all 50 cookies. This is not how many cookies sold... I...

17 years ago

I haven't done this in years... but looks like you can do this using the formula PV = nRT if I remember correctly where P = pressure in atm, V = volume in L, n = number of moles, R = 0.0821 (atm*L*K)/mol "I'm not so sure about the unit on R", and T = temp...

17 years ago

The way you put it, there's no multiplication... so I don't know where you get 3p and 2p... maybe you want to revise your original problem by addiing in the parentheses. Anyway, by the way you put it... it should be: p-p-1/2-2/3=1 (combine like-terms) 0-3...

17 years ago

You probably want to look at topics like the evolution of whales... good luck searching! I think their legs turn into the anal fins and the hands turn into the pectoral fins and they need fins to adapt to their new oceanic environment. They probably go to...

17 years ago

In humans, melanin is the primary determinant of human skin color. So if you are tanned, maybe that's why.

17 years ago

Okay, this is what I think... it seems to be too easy. So the reaction produces 6 moles of CO2 and 6 moles of H2O, that mean they have a ratio of 1 to 1. In other word, when you have 174 moles of H2O, then you'll also have 174 moles of CO2... so there isn...

17 years ago

Don't know. Can I suggest you open up your book and look at the application problems section on the polynomial chapter? Those word problems should have real life cases.

17 years ago

Ex: 1^(1/2) = square root of 2 of(1^1) = sqrt (1) = 1 Ex: 2^(3/2) = sqrt of 2 of (2^3) = sqrt (8) = 2 sqrt(2) Basically do the exponent normally for the numerator and do a square root of the denominator number.

17 years ago

Combustion?

17 years ago

Okay? I believe I don't see any data or question anywhere here except your little introduction.

17 years ago

Translate these info into equations: y=3/5x x=5/3y y+140=2x Now you can use substitution method to solve for x easily.

16 years ago

Um... it uses dendrite to receive signals (inputs) from many other cells because dendrite has many branches of nerve endings. Axons are joined to the dendrite from the head body so the information (message) can be facilitated to the head body. This is wha...

16 years ago

MgO (Magnesium Oxide)?

16 years ago