# Posts by Shadow

Total # Posts: 295

**Chemistry**

I'm currently learning about balancing chemical equation but I don't understand the equation below. 2FE + 3CL(subscript 2) -> 2FECL(subscript 3) I understand 2FE balance out but how did 3CL2 became CL3? Thanks

**Chemistry**

Find the energy( in KJ) of a wave with the wavelength of 507 nm. First, I turn the 507 nm into meter then divide the speed of light by it which give me the frequency. Then I take the frequency and multiply by the planck. Then I would convert the Joule to KiloJoule.- Would this...

**Chem:DrBob**

Dr.Bob, yesterday you told me : "The best way I think is to show examples. 12Mg = 1s2 2s2 2p6 3s2 Here the 1s orbital is lower than the 2s and they are lower than the 3s etc." 19K = 1s2 2s2 2p6 3s2 3p6 3d0 4s2 Here the 1s is lower than the 2s and those are lower than...

**math**

A number plus sixteen.

**algebra 2**

The answer would be (2x+3)(x+1). Do you need an explanation on how to do such problem?

**Chemistry**

Is this always true, sometime true, or never true? The orbitals of a principal energy level are lower in energy than the orbitals in the next higher principal energy level. -I'm thinking sometime true but I can't figure out how to explain why it sometime true. Thanks

**Math**

Is there a way to simplify this further? Thanks (√ x + √ y) / x^2+y^2 ( Square root of x plus square root of y) All divided by x^2+y^2.

**Chemistry**

Could someone give me the steps to converting using the metric system scientific notation? For example, how would I convert 2.2 x 10^2 cm to km? Thanks ( I try Google but they only teach how to convert it when it not in scientific notations form)

**Chemistry**

Could someone tell me how to use SI prefixes to convert within the SI unit system or link me to a website that teaches this? Thanks

**Math**

Rounds each number to four significant figures. ( Could someone check if I'm right? Thanks) a. 431801 = 4318 b. 10235.0 = 1024 c. 1.0348 = 1.035 d. 0.0004384010 = 0.0004384 e. 0.00078100 = 0.0007810 f. 0.0098641 = 0.009864

**Science**

Thanks you Ms.Sue!

**Science**

Could someone help me list 15 thing that are not matter? Thanks

**Microsoft Word**

Is is possible to do this? It a requirement by my teacher but I just can't seem to do it. " singled space text within questions and double space between your questions".- If I single space the text within the questions, won't that make it single space between...

**Math**

Thank you!

**Math**

9x^2-bx+4

**Math**

What positive value of b makes 9^2-bx+4 a perfect square trinomial? How would you solve this problem? Thanks

**Algebra**

The volume in cubic feet of a Cd holder can be expressed as V(x)=-x^3-x^2+6x, the depth is 2-x , factor the polynomial to find linear expression for the height and the width. - Do I just factor the -x^3-x^2+6x? It because I know the volume is LWH, so don't I have to ...

**Algebra**

Let say the problem is (x+2)-(x-2). Would I distribute the (-) to the (x-2) before I FOIL or is the problem saying x+2-x+2? Thanks

**Math**

Simplify. b(b-3)^2 Would I square the b-3 before I multiply it by the b or distribute and then square?Thanks

**Algebra**

Could someone help me check my answer? Thanks. -Write each quotient as a complex number. 1. 3i/-2+i (Is the answer for this one = 3/5-6i/5)

**Algebra**

A gardener is putting a wire fence along the edge of his garden to keep animals from eating his plants. -If he has 20 meters of fence, what is the largest rectangular area he can enclose? -What quadratic function represents the area of the garden? Thanks

**Algebra**

Could anyone help me write a system of equations with this? Thanks - A theater group sold a total of 440 tickets for $3940. Each regular ticket costs $5, each premium ticket costs $15, and each elite ticket cost $25. The number of regular tickets was three times the number of ...

**Algebr**

Each week you must do a minimum of 18 hours of homework. Participation in sports requires at least 12 hours per week. You have no more than 35 hours per week in total to devote to these activities. - Write a system of inequalities to model the situations. How do you write it? ...

**Math**

Write and solve a system of equations for each situation. 1.Your school sells tickets for its winter concert. Student tickets are $5 and adult tickets are $10. If your school sells 85 ticket and makes $600, how many of each ticket did they sell? -Could someone tell me how to ...

**Algebra**

For which value of b would make the equation 3|x-2|=bx-6 have infinitely many solutions? How would I find the values? The choices are -6,-3,3,6.

**Algebra**

Suppose f(x)=2x-5 and g(x)=|-3x-1|.Find each value. f(1)+g(2) -Would the answer be f(1)+g(2)= 4? Thanks

**Algebra**

Does f(1) + g(2) mean the sum of those 2 output? Thanks

**Algebra**

Where do you get the 6 from?

**Algebra**

Suppose f(x)=2x-5 and g(x)= |-3x-1|. Find each value. f(1)+g(2) How would I solve this problems? If anyone could give me the step, thanks a lot.

**Science**

A species of bacteria in a laboratory undergoes exponential growth, reproducing every 30 minutes. Starting with one bacteria cell, how many bacterial cells will there be after 3 hours? Would the answer be 64? Thanks

**Business Class**

In our business class, we have to come up with a business and make it different from other competitor. My business is desktop publishing ( Creating brochures , advertisement, newspaper, and business card) and I can't think of way to make the business unique. The only thing...

**Language Art**

Anyone know what those words call that depend on how you use it on a sentence, it can have a positive or negative feeling?

**Science**

How do I determine the amount of electrons in highest occupied energy level? Thanks The elements in Carbon-12, Atomic Number =6, Neutron 6, Electron=6, and Proton= 6. How would I find the electrons in highest occupied energy level?

**Math**

Write each compound inequality as an absolute value inequality. 1.3 < h < 1.5 Could someone give me the step too? Thanks

**Math**

|y-5|-2=10 I know the first y=17 but I don't know the second ? Thanks

**Biography**

I'm currently doing a project on Steve Jobs and one of the question ask "Name of the product or service they created or provide". Would it be true if I put that he created iPhone,iPad, and iPod? Or not because he don't create them but the worker does.

**Math**

The length of a rectangle is 5 cm greater than it width. The perimeter is 58 cm. What are the dimension of the rectangle? I know the formula for Triangle Perimeter is 2(L+W) and the L is +5 more than the W but I can't write the equation for it. This is what I was thinking ...

**Shadow**

Thanks for your help!

**Shadow**

I came up with 8=s^3, how would I solve this? Thanks

**Shadow**

Write an equation to solve each problem. The sides of one cube are twice as long as the sides of a second cube. What is the side length of each cube if the total volume of the cubes is 72 cm^3? Would it be, 3x+6x=72? Thanks

**Math**

Could anyone explain to be what these term mean in math? I try googling them but can't find the answer. Thanks 1.Opposite of a Difference 2.Opposite of a Sum 3.Opposite of an Opposite

**Math**

So absent-mind of me to overlook the simple pattern. Thanks Ms.Sue!

**Math**

Could anyone help me find the pattern for these fractions? I can't seem to figure it out. Thanks 2/3,3/4,4/5,5/6. The LCD for them is 60.

**Science**

I'm currently studying for a science test and I need help on one of the question. - What is a tsunami and how is it related to an earthquake? For the part " What is a tsunami, my answer would be Tsunamis are giant waves caused by earthquakes or volcanic eruptions ...

**Math**

What is 42 + x = x^2? How do I solve for X? Thanks

**Geometry**

Find the measure of each angle. Sin B=0.7245 Could anyone give me the step to solve these type of problems? Thanks

**chemistry**

Question: When a pink aqueous solution of potassium permanganate, faintly acidified with dilute sulfuric acid was treated with 10% aq. hydrogen peroxide, the reaction took place with the evolution of gas bubbles, and the pink solution was turned colorless. Further chemical ...

**Math**

Thanks

**Math**

What is the answer to this question? 48÷2(9+3)= ( If I do it with PEMDAS, the answer would be 2, but when I type in google, it give me 288) [ 9+3 = 12 -> 48/2(12) -> 2 x 12 = 24 -> 48/24 = 2]

**7th grade Math**

What is 306.52/19.4? That will give you X

**Math**

Solve 6x=x^2 - 6. Could someone give me the steps? Thanks

**Math**

A 64 inch long board is divided into lengths in the ratio 2:3. What are the two lengths into which the board is divided? Thanks

**Science**

Can a person with a genetic disorder that has been corrected by gene transfer pass the corrected condition to is or her children? Explain -Yes, it is because genetic disorder is cause by an an abnormal in genes or chromosomes so it is not a 100% that the parents will pass the ...

**geometry**

I don't think this question given enough information to be solve. The question you just stated is like saying one object is 5 pound, what is the weigh of the larger one?

**math**

1/6 that the dice will roll a 5. 1/6 that the dice will roll a number less than 2.

**math**

I don't think MathMate mean to divide the number. - I'm guessing he say to add the total amount up, and put it as the denominator while the amount of white ball is the numerator. Then you will have your probability of picking a white ball ( Simplify if needed).

**MAth**

You could use proportion to solve for these. 6/10 = x/Amount attempt.[solve for x in the formula]

**helper**

If I'm not incorrect, the inequality would be 180=4x+45. 180-45=135/4=33.75.

**math**

If I'm not incorrect, the inequality would be 180=4x+45. 180-45=135/4=33.75.

**Science**

The actual alleles of an organism is its ____. - Is the answer = genotype? Thanks

**Language Art**

I'm writing an essay and the topic is " Should student be able to go on dangerous field trip like rock climbing?" I'm disagreeing to this and I need 3 reason why. These are my 2 reason, could anyone give me another 3 or just 1? Thanks - Students will be put ...

**Geometry**

Anyone know how to write a proof for this? - The perpendicular segment from a point to a plane is the shortest segment from the point to the plane. Thanks

**Math**

A line parallel to y=-4x+3 would be y=-4x-5. ( Parallel line have the same slope).

**Geometry**

Write an indirect proof. Given:n^2 is even Prove: n^2 is divisible by 4.

**L.A**

Is this word use correctly in the sentence? - Migration Paul like to watch the migration patterns of his new fish. ( I think it is correct because migration is a change in location depending on the season and the fish might be changing places depending on the season) Thanks

**Math**

The measure of two complementary angles are 6y+3 and 4y-13. Find the measures of the angles. ( In this question, are they saying 2 different complementary angle? or two angle that make up a complementary? )

**Science**

Does anyone know why magnet have an affect on plant's growth?

**7th grade**

Math blue book on I.s 126 page 24-25

**L.A**

1.The long-distance swimmer had a sense of ____________. A.Engaging B.Perseverance C.Potential D.Rendition ( Would the correct choice be perseverance?) Thanks

**Math**

1.A job hotline service charges $25 plus a 4% commission c on the first month of earnings if it finds work for a client. Write an equation that represents the total cost T to find a job through the hotline. What is the cost if a client earns $1500 the first month? ( Could ...

**Geometry**

To build a fence, Jim positioned the fence posts and then placed a 2 x 4 board at an angle between the fence posts. As he placed each picket, he measured the angle that the picket made with the 2 x 4. Why does this ensure that the picket will be parallel? - This ensure that ...

**chemistry**

In the ground state of an atom of silver (Ag), how many electrons will there be with the quantum number l = 1?

**L.A**

I'm trying to find the theme of the book I'm reading, but I don't really know what exactly is a theme, could anyone give me an idea of what a "theme" of a story is? -Is the theme = What is the author trying to teach us? Or is it the central message of the...

**Math Stil don't know how to do this problem :(**

You could turn them both into improper fraction. 15 1/6 would now be 91/6. Then 6 5/12 would be 77/12. 6 and 12 common denominator is 12 so 91/6=182/12. 77/12 = 77/12. 182/12- 77/12= 105/12. Then you turn 105/12 into a mixed number which would be 8 9/12= 8 3/4.

**Math subtractin Fractions1**

Turn 1 1/6 into improper fraction which would be 7/6. The common denominator for 7/6 and 3/4 would be 12. 7/6 = 14/12 and 3/4 = 9/12. 14/12 - 9/12 = 5/12.

**Math**

I mean 182/12 and 77/12.

**Math**

won't the improper fraction be 91/12 and 77/12?

**Geometry**

Use the Law of Detachment to write a valid conclusion for the given information. 1.If two angles are supplementary, then their measures have a sum of 180. 2.Angle X and Angle Y are supplementary. Would the conclusion be this? Thanks -The sum of X and Y is 180.

**math**

Since the rectangles are similar, you could use proportion. 42/27= 56/x. 56 x 27 =1512/ 27 = 36. Which mean X= 36.

**INTRODUCTORY ALGEBRA**

The number I pick was 1, I +5 to it which = 6, then 6 x 2 = 12 then 12-4 = 8 and when I divided it by 2, I don't get 3?

**Geometry**

Use the Law of Detachment to write a valid conclusion for the given information. 1.If two angles are supplementary, then their measures have a sum of 180. 2.Angle X and Angle Y are supplementary. -What do they mean when they ask me to write a valid conclusion?

**Math**

Write a two column proof. -If XZ=ZY,XZ=4x+1,and ZY=6x-13, then x=7. Statements: Reason: 1.XZ=ZY,XZ=4x+1 and ZY=6x-13 1.Given That as far as I got to ^. Thanks

**Math**

Determine whether the following statements are always,sometime, or never true.Explain 1.Three points determine a plane. 2.The intersection of two planes can be a point. 1.Never true, the three points must be noncollinear. 2.Never true, the intersection of two planes is a line...

**Science**

How sediments,fossil, and ice core record Earth's geologic history? It record Earth's geologic history by giving scientist an idea of when certain climates or events happen.(Is this a good answer?) Thanks

**To:Ms.Sue**

Is it even possible to include the word "not" in a conditional to make it true? I'm thinking of some false statement and putting "not" in but it still doesn't make it true.

**Math**

Yes. I thought I'm only allow to use the word "not" once. Thanks

**Math**

Write a false conditional statement. Is it possible to insert the word "not" into your conditional to make it true? If so,write the true conditional. -False-If all male are human, then all human are male. -True-If all male are human, then all human are not male. Does...

**math**

24 - (-9) = ?

**math**

1. 3-9= -6 2.3-8= -5 3. -6 + (-5) = ?

**Essay**

Thanks Ms.Sue!

**Essay**

I'm writing an essay on the topic " The most memorable moment in your life" and I was wondering if you guy could give me suggestions on how I could start my introduction. Thanks ( The most memorable moment I chose was the first day of my summer vacation)

**Math**

Make a conjecture about the next item in each sequence. 1.4,6,9,13,18 -I know that from 4 to 6 they added 2 and then from there each time the number you add is 1 more than the last one, but I don't know how to make a conjecture. Thanks

**Math**

If D is the midpoint of AC, is the midpoint of AB,and BD = 12 cm, what is the length of AB ? Would AB=24 Cm?Thanks

**Research**

What is a good way to do research on a person? Thanks

**Math**

The radius,diameter, or circumferences of a circle is given. Find the missing measures. D=2a,r=___,C=___. For the radius I got 1a and the circumferences I got 6.28.a. Could someone check my answer? Thanks

**Language Art**

Would "Philosophy" be a good synonym for "thinking"? Thanks

**Essay**

Thank you very much for your helps throughout the day, Ms.Sue!

**Essay**

Possible for you to suggest me some ideas? I ran out of ideas on how to start it for this topic. I think all day in school and could only come up with sentences that start with "Everyone".Thanks again =D

**Essay**

I'm trying to start an essay paragraph with the topic " Contributing to the community" and I was wondering if this is a good starting sentence.If not, please give me some ideas or suggestions for one.Thanks -Everyone in life had made significant contributions to ...

**A gift of money**

It is approximately 2202 lbs for 1mil dollar in 1 dollar bills.