Friday

August 1, 2014

August 1, 2014

Total # Posts: 1,136

**College Algebra**

A tennis club offer two payment options option 1. aaaaaaaaaa442 monthly fee plus $5/hour for court rental option 2. No mothly fee but $8.50/hour for court rental. Let x = hours per month for court time. Write a mathematical model represnt toltal monthly cost, C in terms of x f...

**chemistry**

(1) - A gas is released. - An insoluble substance is produced. - A permanent color change is observed. - A heat energy change is noted. * (exothermic reaction: releases heat) * (endothermic reaction: absorbs heat) * (Light is emmitted) not sure about the other two, sorry

**Algebra II**

find each product and simplify if possible: 9z+5 X 5z ---- ----- 15 81z(exponent 2) -25

**calculus**

A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and $15 per foot on land. Express the total cost as a function of x, where x repres...

**11th Grade-math**

A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and $15 per foot on land. Express the total cost as a function of x, where x repres...

**math**

4 to 34 I think

**science**

what benefit do liquids have over soilds when trying to react the chemicals?

**6th grade Math**

692 two is under 5 so you dont round up its .69 and 657 seven is over 5 so u round up so .66 understand

**SCIENCE**

what poisonous gas is a result of formaldehyde

**SCIENCE**

HOW DO YOU BALANCE NH4CL + Na2SO4

**SCIENCE**

C SQUARE ROOT OF A/TO THE B POWER

**8th grade**

is the square root of -22 rational?

**Experimental Design**

I'm doing research on reasons for the canceling of soap operas. I cant seem to find any information as to WHY they cancelled south of nowhere. Many sites say that it is just ending, but I need help finding what caused it to end. can someone help me on this topic?? thanks! liz

**7th grade**

what is the formula or equation for converting units?

**Accounting - Adjusting Entries**

$750 of insurance expense needs to be accrued. It was originally recorded as prepaid insurance. Do I just debit prepaid insurance and credit insurnace expense for $750?? My other problem is adjustment was made to record interest expense on bonds payable for $500. The payment f...

**math riddle ALGEBRA WITH PIZZAZZ**

Why does lightning shock people

**Chemistry**

I am supposed to find the percent abundancies of two isotopes. I am given the masses of both isotopes, along with the atomic mass. (This is a fictional element with only those two isotopes.) I am not given percentages for either isotope... how do I solve this?

**Math (alg 2)**

The difference of the area of two squares is 223 square feet and the difference of their perimeters is 24 feet. Find a side of each square.

**Math (alg 2)**

The ratio of two numbers is 3 to 2 and the difference of their squares is 20. Find the numbers.

**Math (alg 2)**

The ratio of two numbers is 3 to 2 and the difference of their squares is 20. Find the numbers.

**Math**

If the width of a rectangle is increased by 2 inches, the area is 140 square inches. If the legnth is increased by 1 inch, the area is 120 inches. Find the dimensions of the rectangle.

**Algebra 2**

The difference of the area of two squares is 223 square feet and the difference of their perimeters is 24 feet. Find a side of each square.

**12th grade**

Thanks William

**12th grade**

Given that x is an inetger, state the relation representing each equation by making a table of values. y=3x+5 and -4<x<4

**ap chem**

? I'm not sure what you mean by that... It's a noble gas if that's what you're asking.

**ap chem**

All the electrons of this element are spin-paired. Carbon Nitrogen Oxygen Flourine Neon

**science**

How do organs and tissues work together to help write your name?

**Math with science**

thank you so much!!

**Math with science**

Radioactive iodine treatment is so successful at treating hyperthyroidism that it has virtually replaced thyroid surgery. To the nearest full day, determine how long it will take for 400 millicuries of I-131, which has a half-life of 8 days, to decay to 3.125 millicuries. 56 d...

**Algebra**

Thanks you were a great help

**Algebra**

An office building containing 96,000 square feet of space is to be made into apartments. There will be at most 15 one-bedroom units, each with 800 square feet of space. The remaining units, each with 1200 square feet of space, will have two bedrooms. Rent for each one-bedroom ...

**Reseach paper**

I too am just one of many people on here doing the same paper and so far I havnt been able to find much to help answer the questions and get this paper written. NO I dont want anyone to do my work for me but my goodness a little help would be nice. Good Luck to everyone trying...

**writing skills**

which one of the following sentences contains an unnecessary word? A.Why dont you leave before the crowd arrives B.The snake raised up its head and struck C.She left early, thoguh he told her not to. D.Rich was angry, but he concealed his feelings

**statics**

If a court acquits every defendant, they will never commit a Type I error. A) True B) False 2. The probability of rejecting a true null hypothesis increases as the sample size increases. A) True B) False 3. For a given level of significance, the critical value of Student's...

**chemistry**

so its 2 electrons?

**chemistry**

How many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water?

**Literature poetry, part 1**

If this be error and upon me proved, I never writ, nor no man ever loved. These lines are an example of a/an a. quatrain b. octet c. couplet d. sestet

**theology**

How does the Book of Daniel present a spiritual message? What is the main purpose of this message?

**math**

From the foot of a building I have to look upwards at an angle of 22 degrees to sight the top of a tree. From the top of the building, 150m above ground level, I have to look down at an angle of 50 degrees below the horizontal to sigh the tree top. a.) How hight is the tree? b...

**math**

Two observation posts are 12km apart at A and B. From A, a third observation post C is located such that angle CAB is 42 degrees while CBA is 67 degrees. Find the distance of C from both A and B.

**math**

prove the following trigonometric identity: (cos x/(1+sinx))+tanx = secx

**world literature**

How do poets utilize literary devices and conventions to develop themes in their poetry? I don't understand how to read a poem so I understand what it is really saying either?

**chemistry**

Definitely C

**simple math**

i just wanted to know how many significant figures in the number 100

**trig**

Determine the height of a tree which casts a shadow of 13.7m when the sun is at an angle of 28 degrees.

**math**

find the constant term of the expansion of (3x²+(1/x))^8 I don't know where to start =\

**math**

Find the coefficient of x³ in the expansion of (2x+5)^6

**Math**

Use Pascal's triangle to expand (a+b)^6 and hence find the binomial expansion of: (x-3)^6

**Spelling/Analogy**

i think this site sukes i give it no stares in less you are as dum as dirt

**math**

what is probability

**astronomy**

yes this is explained much better thank you for your time

**astronomy**

my book tells me the answer is 49 AU. I am just not getting the calculation. Please help

**astronomy**

if a comet is 125 years from sun and has a perihelion distance of 1. AU..What is the aphelion distance? I formulated it this way, is this right? 125years^2/1.AU^3= 15,625

**science**

balance FeS2 + O2 < Fe2O3 + So2

**science**

how do you balance the equation below? Mg + O2 > MgO

**astronomy help please**

A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the p...

**thank you**

thank you

**Astronomy help**

If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot seem to find the correct calculation

**Astronomy**

Are you saying that as the radius of the planet doubled the surface gravity would double too and it is because of the answer you gave before

**can you explain what you are saying**

cannot understand your point

**Astronomy**

A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the p...

**Astronomy**

If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot seem to find the correct calculation

**Astronomy**

Describe in one sentence the rotations and revolutions of the planets.

**Astronomy**

How could you tell if a moon or planet did not form with the rest of the solar system bodies? How might it have gotten there then?

**Astronomy**

Do the rotations of the solar syatem bodies seem to indicate that most of them formed together at the same time in the same way, or seperately under different conditions?

**thanks**

thanks

**Astronomy**

In one sentence I need to describe the shapes of the orbits of the planets. The shape must be accounted for in a model of the solar system, and of the solar system formation. My answer would be that the shapes of the orbits are round. Yet this seems to obvious! Need help.. is ...

**Math**

i feel your hatred. veronica... i feel ya

**Astronomy**

How did the voyager mission change our preconception of Jupiter and its moons

**physical science**

are alkali metals or alkaline earth metals soft silver - white, shiny metals

**physical science**

flourine is a halogen is it also a non-metal

**science**

Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases

**physical science**

do not noramlly react with other elements? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases

**Physical science**

Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases

**physical science**

what is transition metal number 24 a common solid halogen family 13 bears this name

**pre-algebra**

what is the answer for this equation? -4x+9x

**physical science**

The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on the page is review and reinforcement structure of an atom - the three main subtomic particles are the proton, the nuetron and the electron.

**physical science**

The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on hte apge is review adn reinforcement structure of an atom - the three main subtomic particles are teh proton, hte nuetron and hte electron.

**physical science**

what is a one sentence that describes how subtatomic particles and atomic mass unit are realted?

**13 colums science**

K S S S S S S J S S F S S S S S S S S S D S S R S S S S S S

**science**

The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. What pair of elements is in the same period? D and R 2. Which pair of elemetns is in hte same family? K and F 3. Which element has the smallest atomi...

**science Dr. Bob /Pursley**

this is the chart we were given S = empty square 13 columns Question which elemnts are classified as metals. K S S S S S J S S F S S S S S S S S S D S S R S S S S S S

**science -purlsey/DrBob**

If K is the single one would it still be a metal? see prior question for chart also if the question asks for metals does it mean transitional and metaloids

**science**

The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: which elements would be classified as metals is it just D & R or other metals which would be J K S S S S S J S S F S S S S S S S S S D S S R S S S S S S

**science**

How does an electron relate to energy level? How does subatomic particles relate to atomic unit? The reviews ask for 1 to 2 sentences.

**science Dr Bob**

In reference to table you helped me with the last question is which elements would be classified as metals. Does this include just metals or metals and alltoids and other metals I answered D & R I have a huge test thanks so much.

**Physical science**

The question which elements would be classified as metals? Would this include: metals - other metals and metaloids. Does metaloids fall under hte category of metals - we are to look at the periodic table and list the metals - not sure if this inclds metaloids and other metals

**Phyiscal science test monday**

The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. Which pair of eleemtns has hte same number of valence electrons? clueless 2. What pair of elements is in the same period? D and R 3. Which pair of el...

**physical science**

How is an electron related to an electron cloud

**physical science**

How is a subatomic particle related to atomic mass unit How is an electron related to enrgy level. Our study guide asks 1 to 2 sentences

**physical science**

how is an electron related to atomic mass how is an isoptope related to mass number I truly do not understadn how they are realted any help

**physical science**

how is an electron related to atomic mass how is an isoptope related to mass number

**physical science**

how is subatomic particles related to atomic mass unit how is an electron related t oenergy level

**physical science**

How is an isotope and a nuetron related? how is an atomic number and a proton realted?

**physical science**

What is the substance name for NH3

**physical science**

is AL ( aluminium) an element compound formula atom molecule

**physical science**

Most easily observed in the behavior of large objects electromagnetic strong force gravity weak force I answered electromagnetic

**physical science**

the greatest of the 4 forces would be strong force not electromagnetic force - I am a little confused from the reading

**physical science**

which one opf the 4 forces opposes the electromagnetic force in the nucleus of an atom: strong force weak force gravity I thought it was stong force

**physical science**

O = oxygen o2 = ??? it ask for us to name the substance.

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