Sunday

September 21, 2014

September 21, 2014

Total # Posts: 2,310

**Algebra 2**

Both the numerator and denominator have the same bases for the exponents, right? So, dividing these two variables is the same as subtracting the exponents, like: n^(3-¨i)
*February 23, 2010*

**Honors Chemistry**

Ohhh I see. This makes more sense. Thank you! :)
*February 23, 2010*

**Honors Chemistry**

If 20 mL of 0.01 M aqueous HCl is required to neutralize 30 mL of an aqueous solution of NaOH, determine the molarity of the NaOH solution. ==> I got 0.01 M NaOH as my answer. Is this correct?
*February 23, 2010*

**Honors Chemistry**

I don't exactly understand this question -- can someone maybe explain it to me please? 6) Suppose you have an NaOH solution of unknown concentration. Name three possible substances that could be used in "known" solutions to titrate the NaOH solutions.
*February 23, 2010*

**Math**

In right triangle ABC, altitude CD is drawn to hypotenuse AB. If AD equals 4 and AC exceeds DB by 1, find DB. It is from a worksheet about proportions in a right triangle.
*February 21, 2010*

**pre-Algebra**

Sorry, struggling through pre-Algebra .. :-( .. How do i figure out 5x = -20 ?
*February 19, 2010*

**Pre-Algebra ... again :-(**

Thank you Miss Rose!
*February 19, 2010*

**Pre-Algebra ... again :-(**

How do i go about finding the integers of a product and quotient ... like, product of -20 whose quotient is -5 ..... thanks again
*February 19, 2010*

**Math Pre-Algebra**

Gotcha ... makes sense to me! :-) ... thank you! ... i may be back! :-)
*February 19, 2010*

**Math Pre-Algebra**

What is the value of 1 raised to a negative exponent? ... Maybe an example would help me better understand. Thank you very much ... I know it is like a fraction
*February 19, 2010*

**Data management**

The camera club has 5 members, and the math club has 8 members. There is only one member common to both clubs. In how many ways could a committee of 4 people be formed with at least 1 member from each group?
*February 17, 2010*

**chemistry**

is the correct answer 68.93kJ?
*February 16, 2010*

**chemistry**

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate the total ...
*February 16, 2010*

**chemistry**

What quantity of heat is required to vaporize 32.5 g of liquid water at 100°C?
*February 16, 2010*

**Ecology**

How does the skin and life cycle of a frog help indicate the health of local ecosystems?
*February 13, 2010*

**cal 2**

Find the number b such that the line y = b divides the region bounded by the curves y = x2 and y = 16 into two regions with equal area. (Round your answer to the nearest hundredth.)
*February 12, 2010*

**Science**

Plants, cows and humans use the same amino acids to make up their proteins and yet the proteins are very different. Why?? Could a plant make a human protein if we could splice a human protein gene into the plant's genome? Why? ----Those questions are from a lab we did, i ...
*February 11, 2010*

**English**

We are doing this group project where we have to teach the class our vocab words. My job for the project is to make big flashcards with pictures of the words on it. One of the words is vignette, and I have no idea what picture to use, the definition is short verbal description...
*February 10, 2010*

**gr. 10 physics **

I must find the speed of an object, the infermation that is given to me is:n height: 0.10 kinetic energy: 0.50 time travel o.72 (m/s squared). i belive that speed = 0.3... is this correct?
*February 9, 2010*

**Yr 10 English - Poetry**

What were the hobbies (if any) of Nobel Prize winning poet Seamus Heaney? I searched everywhere and couldn't find anything. . .
*February 8, 2010*

**algebra**

x - = 12 3
*February 3, 2010*

**English- Mrs.Sue Please**

Hello Im am stuck on these sentence things and we have to say if it is a preposition, verb, pronoun, conjunction ect. what do I do?
*February 1, 2010*

**Spanish **

how do you make comparisions use equality and superlatives?
*January 26, 2010*

**CP Science 9th grade**

A Sample of Air at 35 degrees Celsius has a relative humidity of 15%. How do you find the dew point temperature?
*January 26, 2010*

**FIN200- FV, PV and Annuity Due CP**

Take the $95. Assuming you take the $95 and compound it daily at an annual rate of 12% for 50 years you would have $38,287.96 which is obviously more than $30,000.
*January 26, 2010*

**Literary Analysis and Composition**

Hey, I was trying to figure out some similarities between the Stories Barrio Boy by Ernesto Galarza and No Gumption by Russell Baker. I got some, but I am supposed to make a four paragraph essay out of it. It would be great if you could list some similarities and differences. ...
*January 22, 2010*

**Literary Analysis and Composition**

thanks! i got a B+ (88.2%)
*January 21, 2010*

**Literary Analysis and Composition**

Sorry, Apparently the last post i did didnt show my selections. Please check these answers for me. Thanks 1. Works such as "To Build a Fire" gave Naturalist writers such as Jack London a platform to argue that (Points: 5) human wisdom ingenuity can solve all problems...
*January 21, 2010*

**Literary Analysis and Composition**

Could you check my work for me? and please hurry, i have 40 minutes left to complete. Thanks so much! 1. Works such as "To Build a Fire" gave Naturalist writers such as Jack London a platform to argue that (Points: 5) human wisdom ingenuity can solve all problems. ...
*January 21, 2010*

**Literary Analysis and Composition**

Could you please check my answers? Thanks! 10. Identify how each gerund or gerund phrase is used in the sentence. All units will remain here for processing. (Points: 3) subject direct object predicate nominative X object of a preposition 11. Identify how each gerund or gerund ...
*January 20, 2010*

**Literary Analysis and Composition**

Please help me out with this question! I am still trying to understand participle phrases. Write the first and last word of the participial phrase. We studied the notes, including all the lectures and outlines.
*January 20, 2010*

**social studies**

how did geography affect the italian peninsula?
*January 14, 2010*

**Precalculus**

Can someone check my answers please? Thank you :) 30. What is Earth's rotational speed at (a) Bangor, Maine (latitude 45 degrees N) and (b) Rio de Janeiro, Brazil (latitude 23 degrees S)? (It's given in the problem also that Earth's rotational speed at the equator ...
*January 13, 2010*

**Math Analysis**

What is the approximate horizontal distance traveled by a soccer ball that is kicked at an angle of 30 degrees with an initial speed of 60 feet per second? a) 84 ft b) 88 ft c) 93 ft d) 97 ft e) 105 ft ==> I tried solving it by solving for x in the equation cos30 = x/60, x ...
*January 10, 2010*

**algebra**

How do you write equations for 4 lines that intersect to form the sides of a parallelogram? What must be true about such lines?
*January 10, 2010*

**Geography**

Ms. Sue sounds like she was having an off day... ^^^
*January 7, 2010*

**MATH!! **

The slope of a line segment AB is 2. The coordinates of the endpoints of the line segment are A(-2,11) and (X,7). Determine the value for X.
*January 7, 2010*

**Math Analysis**

Ohhhhhh I get it now! I was imagining the scenario in a completely different way. Thank you!
*January 6, 2010*

**Math Analysis**

What is the apparent size of an object 1 cm long held 80 cm from your eyes? ==> When they say "apparent size", they mean the angle from which one object is viewed by, say, a person (or in this case a pair of eyes). I thought I'd be able to find the angle by ...
*January 6, 2010*

**English**

Thank you so much Ms. Sue!!
*January 5, 2010*

**English**

I need help with prepositional phrases. I’m given sentences and I’m supposed to rewrite them changing the position of the prepositional phrases so that the sentences are not confusing. If they are already correct, I’m supposed to write correct. I made ...
*January 5, 2010*

**English**

I need help with prepositional phrases. I’m given sentences and I’m supposed to rewrite them changing the position of the prepositional phrases so that the sentences are not confusing. If they are already correct, I’m supposed to write correct. I was wondering ...
*January 5, 2010*

**10th grade**

I am writing an essay on things from the natural world and I need to think of categories for the things in order to write paragraphs. The sun, moon, sea, and sea shore are all things from the natural world. What one smaller category do they fit in?
*January 3, 2010*

**English**

I am writing an essay on things from the natural world and I need to think of categories for the things in order to write paragraphs. The sun, moon, sea, and sea shore are all things from the natural world. What one smaller category do they fit in?
*January 2, 2010*

**Pre Cal**

If log 3=A and log 5=B express Log 75 in terms of A and B. (using the Law of Exponents)
*December 22, 2009*

**Precalculus**

If f(x) = ab^x where a > 0, b > 0, and b is not equal to 1, then b is called the _______________ of the exponential function. Any help is greatly appreciated!! :)
*December 14, 2009*

**Math**

It helps to draw out what the photo in the frame will look like, so you'll draw a rectangle with length "L" and width of "L + 2" (because it says the width [think w] is 2 more than the length "L"). Now, it says a border of 1 in. is placed ...
*December 14, 2009*

**Math -- HELP!!!!**

y + 5y = 90 6y = 90 y = ? Divide each side by 6 and you get your answer.
*December 10, 2009*

**Math Analysis**

31. Radioactive decay of material is determined using the formula N = Noe^-kt. Find the constant k for Plutonium-239 given that its half-life is 24,390 years. ==> I don't really get where to start here because the problem does not give you how much Plutonium-239 there ...
*December 10, 2009*

**math**

What's your question?
*December 10, 2009*

**math**

You're welcome! :)
*December 10, 2009*

**math**

I mean the piece he has is 1/2 yard long, not half of the 3/4-yard one. oops sorry! lol
*December 10, 2009*

**math**

Yep! :)
*December 10, 2009*

**math**

Multiply 3/4 by 2/3 to get the piece Robert needs: (3/4) * (2/3) = ? If you don't have a calculator, cross multiply so the 3s cancel out and the 2 goes into the 4 twice...leaving you with an answer of?
*December 10, 2009*

**math**

An ordered pair consists of an x-coordinate and a y-coordinate, like (x,y). Sooo, you can just start picking random values for x and plugging it in to the equation to get a y value. For example, if you were to plug in 3 for x, you would get: y = 20 + x/3 y = 20 + 3/3 y = 20 + ...
*December 10, 2009*

**9th grade**

Convert milligrams to grams to make it easier: 1 milligram = 0.001 gram Convert kilograms to grams as well so you have the same units: 1 kilogram = 1000 grams Divide kilograms (1000 grams) by milligrams (0.001 grams) to get your answer.
*December 10, 2009*

**algebra**

In this case I would use the method of synthetic substitution, but since I never learned this technique 'til this year in Precalculus, let's stick with long division: 1) Write out the problem like an elementary division problem, with the bar over the 4m^2-9m^2...+7 and...
*December 10, 2009*

**Physics**

1-A car is lifted a certain distance in a service station and therefore has potential energy with respect to the floor. If it were lifted twice as high, how much potential energy would it have? Answer: twice as much 2-Two cars, one twice as heavy as the other, are lifted to ...
*December 9, 2009*

**Social Studies?**

What were churches like in England/Britan during the 1800's?
*December 9, 2009*

**Physics**

if a car travels at 50 km/h, it has kinetic energy. How much more kinetic energy does it have at 100 km/h? Answer=100 squared as much (10000)
*December 9, 2009*

**Physics**

1-A car is lifted a certain distance in a service station and therefore has potential energy with respect to the floor. If it were lifted twice as high, how much potential energy would it have? Answer: twice as much 2-Two cars, one twice as heavy as the other, are lifted to ...
*December 9, 2009*

**Precalculus**

Ohhh I see. Thanks Reiny this helped a lot!! :)
*December 8, 2009*

**Precalculus**

Solve the equation x^3 - 2x + 4 = 0. ==> I know the answer is -2, but I can't seem to remember how to solve these by hand without using a graphing calculator. Any help is greatly appreciated!! :)
*December 8, 2009*

**english**

good, great, nice, and wonderful.
*December 8, 2009*

**Math**

This is the question given: "Peanuts sell for $5/kg and cashews for $20/kg. Mary wants to sell a mixture of peanuts and cashews for $12/kg. How many kilograms of peanuts and cashews would Mary have to mix in order to make 30kg of the $12/kg mixture?" This is an ...
*December 8, 2009*

**Precalculus**

Ohh never mind, I found my error. I feel kinda stupid now though lol
*December 7, 2009*

**Precalculus**

Find the vertex, focus, and axis of symmetry of the parabola x^2-10x-8y+29 = 0. ==> I do it over and over and over, but I keep getting the same answers of (5,4) for the vertex, (5,6) for the focus, and x = 5 for the LOS, but according to this one website, everything except ...
*December 7, 2009*

**English**

I need help identifying verbs in a passive and active voice. 1. Masai, a people of East Africa, live in kraals, or small villages. (Verb=live, A) 2. The village is surrounded by a thick round fence. (verb=is surrounded, P) 3. The kraal contains about 10 to 20 small huts. (verb...
*December 5, 2009*

**6th grade**

How do you draw a cross section showing your disign for a pharaohs tomb?
*December 2, 2009*

**Social Studies**

IT IS ABOUT EQUAL
*November 30, 2009*

**language**

Ronald has a goldfish. His goldfish weights 12 lbs. If Ronald feeds the gold fish 2 ounces of food every hour and the fish gains 2 ounces each hour,how many pounds would ronalds goldfish weight in 5 days?How many lbs of food does the goldfish eat in a week?
*November 30, 2009*

**Precalculus**

Ohhhhh!!!!! This totally makes sense. I forgot to multiply the 4 by 25 before bringing it over to the other side. Thanks so much!! :D
*November 23, 2009*

**Precalculus**

"Sketch the ellipse. Find the coordinates of its vertices and foci. 34. x^2 + 25y^2 - 6x - 100y + 84 = 0 (Hint: Complete the squares in x and y. Begin by writing the equation in this form: (x^2 - 6x + ___) + 25(y^2 - 4y + ___) = -84.)" ==> I used the hint that ...
*November 23, 2009*

**Precalculus**

A rectangle is inscribed in a circle of radius 4 centered around the origin. Write a function A(x) for the area of the rectangle. ==> I have no idea how to do this. Can someone help me please? Thanks!!
*November 19, 2009*

**History**

So I am doing a power point assignment for my history class on Needle Distribution Programs and need some help. I need to have what it is, basic background of it,How it is important, and how it is/has changed American history. I have a lot of the information but need some more...
*November 17, 2009*

**geography**

1. Which of the following problems is not a result of Egypt's growing population? A overcrowded cities B emigration of educated professionals to other countries C a diminishing food supply D widespread unemployment Is it D? 2. What is a major reason for the failure of West...
*November 17, 2009*

**Math Analysis**

5. The bacteria population doubles every 10 hours. How long will it take to triple the initial amount? (Use log 3 / log 2 = 1.585) ==> I thought you could use the formula A(1/2)^(t/h), but I don't know... Any help is GREATLY appreciated!! :D
*November 16, 2009*

**us history**

the state of Utah, being predominatley LDS decides to pass law that requires all students across the state to attend a Mormon church meeting once a week. If students neglect to attend this meeting, that will be suspended from school ad will not graduate from high school. Can ...
*November 15, 2009*

**Physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1130 m/s. At what altitude is the projectile's speed three-fourths its initial value?
*November 15, 2009*

**physics**

A toy train track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis (see the figure). A toy train of mass m = 2.5 kg is placed on the track and, with the system initially at rest, the electrical power is turned on. The train ...
*November 9, 2009*

**Honors Chemistry**

Oops, I mean I got 49 g Mg for number 4.
*November 8, 2009*

**Honors Chemistry**

On the same subject as before with the limiting/excess reagent stuff -- can someone please check my answer to make sure I'm doing it right? Thanks sooooo much!! :DD 3. Mg + 2HCl ==> MgCl2 + H2 -- What mass of hydrogen at STP is produced from the reaction of 50 g of Mg ...
*November 8, 2009*

**Honors Chemistry**

This makes perfect sense, except I don't quite understand why you have to multiply the 3 moles of H2 by 2 in the last step...
*November 8, 2009*

**Honors Chemistry**

"How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2? N2 + 3H2 ---> 2NH3 ==> 28 g N2 x (1 mol N2/14.0 g N2) x (2 mol NH3/1 mol N2) x ( 17.0 g NH3/ 1 mol NH3) = 68 g NH3 25 g H2 x ( 1mol H2/2.0 g H2) x (2 mol NH3/3 mol H2) x (17 g NH3...
*November 8, 2009*

**chemistry**

.520
*November 6, 2009*

**Honors Chemistry**

Can someone check my first answer and help me with the second question? Thanks so much!! :D 1. N2 + 3H2 ==> 2NH3 : How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2? ==> I got 37.5 grams. 2. How much of the excess reagent in Problem 1 ...
*November 5, 2009*

**3rd grade**

The sum is the number you get from two numbers, so: 198 + 864 = ? Start by writing the two numbers on top of each other: 198 864 ---- Now, starting from the right, add the numbers and carry over the tens whenever it applies. Sooo when you start adding: _1_ 198 864 ---- ___2 (...
*November 5, 2009*

**Math **

No problemo! :)
*November 5, 2009*

**Math **

For the first problem, I calculated the answer to be $519.82: net price = original price * net price factor To calculate the net price factor with a chain discount of 10/10/5, subtract each percentage from 100%: 100% - 10% = 90% 100% - 10% = 90% 100% - 5% = 95% Now, multiply ...
*November 5, 2009*

**science grade 10**

The (aq) stands for aqueous solution, and FeSO4 can either be named duretter or iron (+2) cation sulfate.
*November 5, 2009*

**Honors Chemistry (stoichiometry)**

Can someone check and make sure I'm doing these problems right? Thanks so much!! 1. N2 + 3H2 ==> 2NH3 : How many moles of hydrogen are needed to completely react with two moles of nitrogen? ==> I got 6 moles. 3. Zn + 2HCl ==> ZnCl2 + H2 : How many moles of ...
*November 4, 2009*

**Essay for AP English**

Grr here's my essay: “Sinners in the Hands of an Angry God” and “Beauty of the World” are two powerful sermons delivered by Jonathan Edwards, but they convey completely different meanings. In both homilies, Edwards utilizes the use of lexicon and syntax...
*November 3, 2009*

**Essay for AP English**

Would someone be willing to critique and edit my essay? Thanks so much! PROMPT: Read the two sermons "Sinners in the Hands of an Angry God" and "Beauty of the World" by Jonathan Edwards. Compare and contrast the rhetorical strategies of tone, lexicon, and ...
*November 3, 2009*

**physics**

A metal can containing condensed mushroom soup has a mass of 269 g, a height of 14.7 cm, and a diameter of 6.79 cm. It is placed at rest on its side at the top of a 3.34 m long incline that is at an angle of 22.4o to the horizontal and is then released to roll straight down. ...
*November 3, 2009*

**physics**

A metal can containing condensed mushroom soup has a mass of 269 g, a height of 14.7 cm, and a diameter of 6.79 cm. It is placed at rest on its side at the top of a 3.34 m long incline that is at an angle of 22.4 degrees to the horizontal and is then released to roll straight ...
*November 1, 2009*

**physics**

What linear speed must a 0.0495-kg hula hoop have if its total kinetic energy is to be 0.113 J? Assume the hoop rolls on the ground without slipping.
*November 1, 2009*

**physics**

A Ferris wheel with a radius of 9.61 m rotates at a constant rate, completing one revolution every 34.1 s. Calculate the magnitude of a passenger's acceleraton when at the top of the wheel.
*November 1, 2009*

**physics**

When it is 10:00, the hour hand on an analog clock is 300 degrees ahead of the minute hand. How many minutes elapse (to three significant digits) before the minute hand next points in the same direction as the hour hand?
*November 1, 2009*

**AP English**

Would you consider the sermon "Sinners in the Hands of an Angry God" by Jonathan Edwards to be a homily?
*November 1, 2009*

**Geometry**

I need help on a geometry proof!!!! If Line AB is parallel to Line DC and Line BC is parallel to line AD, prove that angle B is congruent to angle D. The picture is basically a square or parallelogram with line DC on the Top and Line AB on the bottom, and as u can tell A and D...
*November 1, 2009*

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