# Posts by t

Total # Posts: 427

divide: 306.52/19.4= 15.8

Algebra
You have to plug 4x^2 into the square root. the answer is 2x because the square root of 4 is 2 and then the x just stays with the 2.

ECONOMICS
WHAT DO GOVERNMENT STATISTCIANS CALCULATE GDP BY SIMPLY ADDING UP TOTAL SALES OFALL BUSINESSFIRMS IN ONE YEAR?

statistics
The population of SAT scores forms a normal distribution with a mean of µ =500 and a standard deviation of Ïƒ =100. If the average SAT score calculated for a sample of n = 25 students, a. What is the probability that the sample mean will be greater than M= 510...

chemistry
"A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium? ...

college algebra (maths 112)
actually this is only freshman (HS) math but i still don't remember how to do it

Chemistry
Samples of Neon and helium are placed in separate containers connected by a pinched rubber tube. There is 5.00 liters of neon at a pressure of 634 mm Hg in the first container. The second container has 3.00 liters of helium at 522 mm Hg. When the clamp is removed from the ...

chemistry
All of the lanthanide metals react with HCl to form compounds having the formula MCl2,MCl3,or MCl4 (where M represents the metallic element). Each metal forms a single compound. A chemist has .250g sample of a transition metal, and wishes to identify the metal. She reacts the ...

chemistry
If you have a 37.34g sample of ammonium chromate , how many protons do you have?\

algebra 2
suppose a house that costs \$270,000 appreciates by 5% each year. in about how many years will the house be worth \$350,000? use the equation 350 = (270) (1.05)^x and round the value of x to the nearest year.

algebra
(36x^3-60x^2-87x-21)divided by 9x+3

math
How could knowing that 35/7 equal 5 help you find 42/7 explain

uOFp
Imagine you are conducting fieldwork and discover two groups of mice living on opposite sides of a river. Assuming that you will not disturb the mice, design a study to determine whether these two groups belong to the same species

MATH
7 hrs

chemistry
How many moles of water, H2O, are present in 75.0 g H2O?

science

sociology
I second that Stine.. I'll give you guys a hint, it has partiality to do with Conflict Theory.

Math
Donna and Rod bought a new van at an end of year sale for dealer cost plus 5%. If they paid \$17,325.00 what was the dealer cost in dollars?

wow. i learned something new! thank you both!

i'm a little shy on X values sorry, but does that help?

Exuse my ignorance, i'm in algebra 1 honors, but is the 7.50 represented by X? meaning 7.50x1/5?

1/6

math
what is the question? isolate the X?

Algebra
can i get a formula?

Algebra
Terence wants to estimate the height of a tree. He places a mirror on level ground, as shown in the picture below, and stands so that he can see the top of the tree in the mirror. Since light bounces off the mirror at the same angle at which it strikes the mirror, angle 1 ...

magnetite will attract this

science
magnetite will attract this

The first bullet has 2.4 Joules of energy, and the second has 9.6 Joules of energy. The equation is 1/2*m*v^2: You forgot that the mass is given in grams instead of kilograms, so you need to convert to kg (grams/1000, so .003 kg). You also didn't square the velocities. The...

Chemisty
A 5M solution is diluted 1/10 and again 1/5. What is the concentration of each dilution?

PreCalc
what is the cot of theta if the cos of theta = 4/9 and theta lies in quadrant IV

chemistry
The beaker with with 300ml of water contains more heat.

calc
Average daily temp,y, is y=45-23cos(2pi(x-32)/365), where x is time in days, x=1, corresponds to Jan 1 and y is temp in degrees F. Determine the period of the function. Determine critical numbers, over one period. Determine relative extrema, what does relative extrema represents

Math
Depreciation of an office machine. Data regarding the value of a particular color copier is represented in the following graph. At what rate is the value changing?

college
The value of a mint state 63 uncalculated 1950 Jefferson nickel minted at Denver is 8/7 the value of a 1945 nickel in similar condition minted at Philadelphia. Together the total value of the two coins is 15.00 what is the value of each coin?

Math (Very Easy Math)
Simplified-down to lowest terms;cannot be reduced any more. I hope this helped,this is my own definition.

CHEMISTRY (WEBWORK)
^^ that's right. i just got it.

Physics
While riding her bicycle, she goes from a full stop to 9m/s in 3 minutes. How fast is she acclerating?

Algebra
Amy paid \$67.15 for a pair of running shoes during a 15% off sale. What was the regular price?

Find the perimeter or given triangle. KLM if JHG~KLM, KM=6, HJ=3, JG= 4, and GH=6. The biggest triangle is FHL. KLM is part of right corner of the big triangle and JHG is the left corner of the big triangle.

math
Math:How could the following information be represented as a ration? Of fifty people interview, none had ever eaten sushi. is it 50:0

geometry
a rectangle field is 130 m by 420 m. a rectangle barn 19 m is built in the field. how area is left ove?

human services
What are some health hazards employees may encounter in human services?

chem-redox
write down Oxidation equation, Reduction equation and Overall equation theres 3 equations *H2O2 + H2SO4 + KMnO4 *H2O2 + KMnO4 *and *Ethanol + H2O2 + K2Cr2O7

Algebra 2 with trigonometry
2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx

Algebra 2 with trigonometry
2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx

Algebra 2 with trigonometry
A baseball diamond is a square 90 feet on a side. The pitcher's mound is 60.5 feet from home. How far does the pitcher have to run to cover first? (we are using the LAW OF SINES AND COSINES)

chemisty
how many grams of precipitate are produced when 0.300 M K2CrO4(aq) (50.0mL) are added to excess BaCl2(aq)?

science
CO2 binds with water to make carbonic acid (H2CO3)

critical thinking
Premise- Since most all disease can be effectively prevented by a healthy lifestyle. Conclusion-Animal activist sometimes contend that medical research is unneccessary. Is this a valid/sound argument or is this an ivalid/unsound argument?

chem - pressure
i did p1/t1 =p2/t2 converted celsius to kelvin i get 935.5 mmHg for a then 333.2 for b i don't get c

chem - pressure
A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to vaporise. The final ...

chemistry
A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to vaporise. The final ...

chemistry
the answer in the book was 4.3 grams but if you do that you get 169.8731/0.988 which is 171.94 g i don't get it

chemistry
it is desired to prepare 250.0mL of a standard solution having a concentration of 0.1000M AgNo3. How many grams of a sample of AgNO3 of 98.8% purity are required for this purpose?

chemistry
it is desired to prepare 250.0mL of a standard solution having a concentration of 0.1000M AgNo3. How many grams of a sample of AgNO3 of 98.8% purity are required for this purpose?

MANAGEMENT ACCOUNTING
The representation for fixed cost per unit of activity is:

marketing-
Factors Alex should consider include external influences (i.e., culture, subculture, demographics, social status, reference groups, family, and marketing influences) and internal influences (i.e., perception, learning, memory, motives, personality, emotions, and attitudes). ...

Accountingt
ert

Chemistry
The pressure inside a hydrogen-filled container was 2.10 at 21 . What would the pressure be if the container was heated to 96?

calculus
Let F(s)=5s2+1s+4. Find a value of d greater than 0 such that the average rate of change of F(s)from 0 to d equals the instantaneous rate of change of F(s)at s=1.

chemistry
Okay, I guess I should rephrase my question. I know how to go from moles to grams. My REAL question is the dilution part. When I do M1V1 = M2V2, I do (0.562 M)(0.001 L) = (x)(0.05 L), but that doesn't seem right, because the answer is 0.01124 mol and when I convert that to...

chemistry
Mass of Aspirin tablet: 0.357 g 10 mL of 1 M NaOH was added to the aspirin tablet in a 125 mL Erlenmeyer flask and heated to a boil. The solution was transferred to a 100 mL volumetric flask and the flask was filled to the mark with DI water. 1 mL of the solution was pipetted ...

math
never mind got it... Thanks

math
what are the subsets of S?

math
WHAT IS A 100-GON

Physics
So, V^2=g*L V=sqrt 9.8 * 2.17

AP Physics B (Heat Engines)
Do not multiply the percentages you calculated by .65, because you already multiplied it to get 17% and 14.6% :)

math
A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?

algebra
y-9>-16 the solutions is y> i don't get this?

Chemistry
What volume of 0.178 solution is necessary to completely react with 92.3 of 0.106?

3rd gr social studie
He know how to do the work it just when the teacher is explaning the lesson is the problem.

my need help with 3rd grde social studies

Algebra 1
y=-2x + 4

Economics
The statement, “A manager should never hire another worker if the new person causes diminishing returns.” is false. A manger should hire what is needed as long as the point of negative marginal product is not reached. Going beyond the point of diminishing returns is...

statistics
The sum of the residuals is __________. Is it 0?

AP Chemistry
I need help with figuring out an appropriate way to do this sort of lab: how to determine an unknown compound. With this one however, the teacher just gave us a white powdered compound - and asks us to figure out how to identify it using ANY lab procedures. He gave hints that ...

data management (gr.12)
2^n-1=2^4-1=15 2 is always the base (you either pick it or you don't) and 4 because there are 4 options and subtract one because you exclude the empty or null set.

Stats
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for...

ART
HENRY MOORE

statistics
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for...

Chemistry
hi i was just wondering what the solution would be to: AgNO3 + Na2S2O3 + sunlight (light enegy) ?

science
how much water is there in a can of coke

science
are the ingrdients in coke soluble or unsoluble

science
why does warm coke go flat

science
why do bubbles form in coke when poured into glass

science
when a coke can is frozen it explodes, why

science
why do coke cans get moisture on the outside when they are taken out of the fridge

math
a plane with an airspeed of 192mi/h is headed on a bearing of 121 degrees. a north wind is blowing (from north to south) at 15.9 mi/h . find the ground speed and the actual bearing of plane.

MATH
a traingle has an area 48 square cm and its shorter sides have lengths 9cm and 12cm. find the lagest angle of the traingle.

MATH
The Captain of a freighter 8km fromthe nearer of two unloading docks on the shore finds that the angle between the lines of sight to the docks is 35 degrees. if the docks are 10km apart, how far is the tanker from the farther dock? The Captain of a freighter 8km fromthe nearer...

MATH
Two Planes leave an airport at the same time, one flying 300km/h and the other at 420km/h The angle between their flight paths is 75 degrees after three hours, how fart apart are they? answer: so it would be c^2=a^2+b^2-2ab cos C 900^2+1260^2-2(900)(1260)(cos75) c^2=33542.9 c=...

excel 2007
I need an excel formula that averages students test scores, dropping the lowest score if all 5 tests are taken

excel 2007
I have to average students test scores but if they have taken all five tests, I need to drop the lowest score before averaging

chemistry
Opps. That must have been a mistake made by the teacher when typing because I just looked back at an extra i had of the worksheet and it is printed exactly as i typed it. no worries. i did my best.

chemistry
I have more more problem i need some help figuring out. I really do not know how to even approach this problem; there is so much information. - A newspaper article about the danger of global warming from the accumulation of greenhouse gases such as carbon dioxide states that &...

Chemistry
i figured out my question, haha. will post if i need more help. thanks again! this website is amazing!

Chemistry
youre right. we were taught to use dimenstional analysis as opposed to a formula. i'm a bit confused at this point now. 3a. convert mols (CN)2 to mols CF4. I'm not sure how to set it up. Do i put the mols of (CN)2 I found (which is 2.67 by my caluculations) over 2CF4? ...

Chemistry
When you say in step 2a to convert you mols by using grams/molar mass, you do mean to just put 80/the molar mass of (CN)2 correct? because i have been taught to do it differently.

Chemistry
THANKS SO MUCH. i actually typed number two exactly as written. maybe that's why it is so confusing to me too - it really does not contain all the infomation needed, at least i do not think it does.

Chemistry
I have a few questions, if anyone can help me at all it would be amazing. i need this done by TOMORROW (03/03/2008) 1. Cyanogen has been observed in the atmopshere of Titan, Saturn's largest Moon, and in the gases of the interstellular nebulas. On Earth, it is used as a ...

1. Pages:
2. <<Prev
3. 1
4. 2
5. 3
6. 4
7. 5
8. Next>>