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Posts by connie

Total # Posts: 250

Algerbra 1
Multiply (-23)(-10)

Algerbra 1
3. In your industrial oven, you bake two baking sheets with 12 scones each, two baking sheets with 20 cookies each, and one baking sheet with 2 scones and 10 cookies. a. Write an expression that illustrates the total cost of all baked goods in the scenario above using the ...

algerbra 1
5. When managing a business, it is important to take inventory of where your money is spent. You have a monthly budget of $5,000. Refer to the table below and answer the questions that follow. Round your answers to the nearest tenth of a percent. Category Cost Percentage Labor...

algerbra 1
4. Your profit P is determined by subtracting the cost C, the amount of money it costs to operate a business, from the revenue R, the amount of money you earn from selling your product. Profit can be represented algebraically by the equations: Profit = Revenue - Cost OR P = R...

algerbra1
2. You are trying to decide how to most efficiently use your oven. You do not want the oven running at a high temperature when you are not baking, but you also do not want to waste a lot of time waiting for the oven to reach the desired baking temperature. The instruction ...

Algerbra1
1.You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a.What ...

calculus
Steve, The problem has a 39 in front of the "e".

calculus
The full quesiton is "The population of a certain species of fish introduced into a lake is described by the logistic equation G(t) = (12,000) / 1+39e^(-1.2t) where G(t) is the population after t years. Find the point at which the growth rate of this population begins to ...

calculus
What is the derivative of (12,000) / 1+39e^(-1.2t)

Chemistry
1.)Two different Isotopes are found to have 2 different cpm with Isotope A having a CPM that is 1.5x that of Isotope B? Which one is more radioactive? 2.) And how can CPM for an isotope be increased? I think that for the same CPM you can have different radiation depending on ...

chemistry
A patient receives 3.0 mL of a solution containing technetium-99m for a breast image. If the activity of the technetium-99m is 9.5mCi/mL what is the dose received by the patient? Answer Choices are: a)29mCi b)3.2mCi c)320uCi d)28.5mCi So I times 3.0mL * 9.5 = 28.5 But the ...

chemistry
A wooden object from a prehistoric site has a carbon-14 activity of 10 counts per min.(cpm) compared to 40 cpm for new wood. If carbon-14 has a half life of 5730 years what is the age of the wood? Please get me started. Thank you

chemistry
I got this one I think 50.g/2500mL x 100% =.02 X 100% = 2.0 %

chemistry
What is the concentration, mass/vol percent (m/v) of a solution prepared from 50.gNaCl and 2.5L? Do I divide 50.g NaCl/2.5L?? = 20% Thank you!

chemistry
A solution contain 43mEq/L of Cl- and 11 mEq/L of HPO4*2-. If the only cation in the solution is Na+ what is the Na+ concentration if mEq/L? Can you help me with each step to solve this problem?

Chemistry
What is the correct set up for: How many milligrams are in 67 Kilograms? I think this might be correct but I am unsure. 67kg x (1g/10^3kg) x (1mg/10^-3g) Thank you!

Chemistry
The number 80710 is rounded to 2 SF? The choices are confusing: A) 80700 B)81000 C)8070 D)8100 E) None Is E correct? or do you round up to 81000? (B and D are both 2SF A and C are 3SF?) Thanks for you help.

Chemistry
The density of any material can be determined by the slope of a straight line by plotting mass values and vol. values M=DV Mass g. Vol.ml #1 0.55 0.60 #2 1.75 1.80 #3 3.50 3.40 #4 5.60 5.25 #5 7.50 7.00 I need to find the slope and graph the info. So do I make the graph with Y...

Math
The number 80710 is rounded to 2 SF? The choices are confusing A) 80700 B)81000 C)8070 D)8100 E) None Is E correct? B and D are both 2SF A and C are 3SF??? Thanks for you help.

math
What is the correct set up for: How many milligrams are in 67 Kilograms? Is this correct: 67kg x (1g/10^3kg) x (1mg/10^-3g) Thank you!

Math
Done earlier by Steve Thank You Answer is B 1600

Math
(93.789 - 5.40) x 18.057 = answer should be in proper # of SF My answer is 1596.040173 But my choices are A)1596,B)1600,C)1596.239,D)1590,E)1596.2 So would the answer be 1590 because of the 3 SF Thank You!

Math
(93.789 - 5.40) x 18.057 = answer should be in proper # of SF My answer is 1596.040173 But my choices are A)1596,B)1600,C)1596.239,D)1590,E)1596.2 So would the answer be 1590 because of the 3 SF Thank You!

Math
What is the sequence of conversion factors for units if you change from ft/sec. to km/hour? Is it ft/sec x sec/min x min/hour x ft/m x km/m?

chemistry
The density of sample measurements taken by a tech are: 0.810g/mL, 1.375g/mL, 2.046g/mL. The Actual density is 1.027g/mL. Are these measurements by the tech. precise accurate or neither or both Is the correct answer: Neither??? Thanks,

chemistry
I got it I take 18 and multiple by 5.172=93.1 g

chemistry
Mg3N2 +6H2O- 3Mg(OH)2 + 2NH3-- How many grams of H2O are needed to produce 150g of Mg(OH)2? I thought I had this but.....the correct answer should be 93 grams Where did I go wrong?? 1) Change 150 g Mg(OH)2 into moles by dividing by molar mass from periodic table. 150 / (24 + ...

Chemistry
187.55g/moles

Chemistry
I got it myself: Yeah! 63.55 + (14.01 + 48)x 2 = 187.55g/moles

Chemistry
the molar mass of CopperII Nitrate CU(NO3)2 is _________grams Ok so I 1. Cu= 63.55 2. N=14.01 3. 0= 6 X 16.00=96 I get 96.+14.01+63.55? =173.56 Answer is 188 grams? What did I do wrong? Thank You

Chemistry
To convert the number of moles of H20 to moles of NH3? 1. H=2(1.008)= 2.01 2. 0=1(16.0) = 16.0 Total = 18.01 =# of moles of H20???? then what do I do Am I doing it right so far? thank you!

chemistry
How many grams of MgO are produced when 40.0grams of 02 react with Mg? 2mg+O2--->2mgO Could you please set the problem up? I think the answer is 101, but I do not know how to get that answer. Thank you

Chem
How many grams of N2 are produced when 125g of NH3 reacts by the following? 4NH3+6NO--->5N2 +6H20 I know the answer but I do not know how to do the problem. The answer in the book is 257g But what do I do? I am not even sure where to start? Thanks

Chemistry
Plot data, preform interpolations or extrapolations, determine slope of best line, determine y intercept. Write equation of the line. T in Kelvins40.0 70.0 100.0 120.0 0 V in ml 250.0 430.0 610.0 730.0 0 Value of V at T= 50.0? Value of T when V= 800.0? 1.So, I made a graph ...

chemistry
What are the joules needed to melt 50.0g of ice at 0 degree C and to warm the liquid to 65.0 degree C? Thank you so much!

Chem >Jai
Posted by Connie on Saturday, September 10, 2011 at 10:36am. What is the amount of energy of calories to heat 8.5g of water from 15 C to 36 C? I think you take 8.5g x 21 degree C, but then I am stuck. Thank you Chem - Jai, Saturday, September 10, 2011 at 10:50am amount of ...

Chemistry
What are the joules needed to melt 50.0g of ice at 0 degree C and to warm the liquid to 65.0 degree C? Thank YOu

Chem
Energy needed to keep a 75w bulb burning for 1 hour = 270kj Calculate energy neede to keep it burning for 3 hours? In J and kcal? I got the J: It is 270kj x 1000/1 x 3/1 = 810000=8.1 x 10^5J But How Do I get the kcal? Thank you

Chem
What is the amount of energy of calories to heat 8.5g of water from 15 C to 36 C? I think you take 8.5g x 21 degree C, but then I am stuck. Thank you

Chemistry
What is the mass of 36.0mL of a liquid if its density is 2.70g/mL? is the right answer 97.2 g?

Chemistry
The average adult has about 9.0 pints of blood. If 20 drops of blood is = to 1 mL. How many drops of blood does the average human contain? Is the answer 85,1400 drops or 85,000 drops or neither? Thanks!

Chemistry
Caffeine is 49.47% carbon, 5.19% H, 28.8%N and 16.48% O. What is mass of carbon in 37.1g of caffeine?

Math
(1.0900 x 10to the 4th) X (2.098X 10 to the 14th) divided by (7.45x 10 to the negative 6th power)

math
[7-(-8)]|-6|=

chemistry
a patient receives 250 mL of a 4.0% (m/v) amino acid solution twice a day. a) how many grams of amino acids are in 250mL of solution? b) how many grams of amino acids does the patient receive in one day? For a) I came up w/10g and for b) I came up w/ 20g in 1 day. Is this ...

chemistry
calculate the volume(ml) of a 0.215M KOH solution that will completely neutralize each of the following? a) 2.50ml of a 0.825M H2SO4 solution b) 18.5ml of a 0.560 M HNO3 solution c) 5.00mL of a 3.18 M H2SO4 solution

Anthropology
why do you think that members of a professional academic association(American Anthropological Association) decided to issue an official statement about race? [hint: what is politically relevant about the beginning and growth of anthropology as a discipline?]

Chemistry
How do you work the problem 1:10 dilution of 75mL of 2.5M H2SO4

chemistry
Just wanted to say thank you to DrBob for responding back even if he wasn't able to answer the question posted on Thur. 4/14/2011. If there is anyone else who can answer I'd appreciate it.

chemistry
Its 5:23pm Ive just checked to see if I've gotten a response,looks like mine has been skipped over. I see questions that were asked after mine and the one right before mine. I never got an answer. What's up?!

chemistry
I don't know how to explain or if Ive got my homework answer correct. The question is: A patient on dialysis has a high level of urea, a high level of sodium and a low level of potassium in the blood. Why is the dialyzing solution prepared with a high level of potassium ...

chemistry
How many grams are in 2.25 mole of NaBr?

chemistry
A sample of Nitrogen(N2)& Helium has a volume of 250mL @ 30degrees celsius & a total pressure of 745 mmHg a)If the pressure is 32mmHg what is the partial pressure of the Nitrogen? b) What is the volume of the Nitrogen at STP? Did not understand previous answer given!

chemistry
A sample of Nitrogen(N2)& Helium has a volume of 250mL @ 30degrees celsius & a total pressure of 745 mmHg a)If the pressure is 32mmHg what is the partial pressure of the Nitrogen? b) What is the volume of the Nitrogen at STP?

chemistry
Gasahol is a fuel containing ethanol(C2H6O) that burns in oxygen (O2)to give carbon dioxide and water. a)How many moles of O2 are needed to completely react with 4.0 moles of C2H60? b) If a car produces 88g of CO2,how many grams of O2 are used up in the reaction? c)If you add ...

chemistry
If a car produces 88g of CO2, how many grams of O2 are used up in the reaction?

physics
thank you!

physics
A dart is thrown horizontally with an initial speed of 6 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.29 s later. Neglect air resistance. (a) What is the distance PQ? (b) How far away from the dart board is the ...

US History
What actions did FDR chose to mobilize the nation for war? What new social and economic choices did American face as the nation became the “arsenal for democracy? What new opportunities and old constraints did woman and minorities encounter on the home front and in their ...

History
US government not sure what civil liberties?

History
Assess the validity of this statement, “One of the ironies of World War I was that in a war to make the world safe for democracy, government attacked the civil liberties that make democracy possible."

History
One of the ironies of World War I was that in a war to make the world safe for democracy, government attacked the civil liberties that make democracy possible.

FZN
Your school has contracted with a professional magician to perform. The school has guaranteed an attendance of at least 1000 people and total tickets sales of at least $4400. The tickets are $4 for students and $6 for non students, of which the magician receives $2.50 and $4....

spanish 1
paso - You would use the 'yo' form to say "During the day, I spend time with my friends."

Physics
Thank you!

Physics
An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous acceleration 4.20 s into the flight?

Physics
A bag of sand dropped by a would-be assassin from the roof of a building just misses Tough Tony, a gangster 2-m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.

French
how do you unscramble these French words? pest seuclsars

accounting
I am trying to get the words together I have written some but have writers block i understand if you can't help. thanks for asking

accounting
Write a 700-word paper answering Question 2 in Ch. 24. Explain the need for full disclosure in financial reporting. Identify possible consequences of failing to properly disclose certain items in financial statements.

algebra
Soybean meal is 18% protein: corn meal is 9% proten. How many pounds of each sould be mixed together in order to get 360-pounds of mixture that is 14% protein? Soybean meal_______, Corn meal_______.

accounting
__a__ 1. A responsibility center that incurs costs (and expenses) and generates revenues is classified as a(n) a. cost center. b. revenue center. c. profit center. d. investment center. _a___ 2. The most useful measure for evaluating a manager's performance in controlling ...

math
select at least 5 more Pythagorean Triples. Show why your 5 sets of Pythagorean Triples work in the Pythagorean Theorem formula. 5,12,13

college algebra
6x+7y=53 8y-9y= -21 write two equations that have your two intergers as a solution.Addition and subtraction methods

college algebra
write two equations that have your two intergers as a solution. 5x-y=10 X + 6y=18 addition and subtraction methods

5th grade
solve 3 gal 3 qt = _____ qt

6 th grade math
2 students are learning how to bake apple and blueberry pies. The first student makes an apple pie and the second student bakes a blueberry pie. If the first student eats 1/4 of the apple pie and the second student eats 1/2 of the blueberry pie, which expression represents how...

Chemistry
The titration of a 50.0 mL solution of the monoprotic bromoacetic acid (pKa = 3) takes 10 ml of 0.01 mol L-1 NaOH to reach the stoichiometric point. What was the initial concentration of bromoacetic acid? A) 0.02 mol/L B) 0.01 mol/L C) 0.002 mol/L D) 0.001 mol/L

chemistry
20.92 %

? on Chemistry
Ok I did look back and it makes more sense...but I am confused about this problem. I initially did select that [NO2] increases as well as [N2] and [O2]....I selected that the rxn absorbs energy since it stated that dH= +66.4. I'm not sure which of these is incorrect then??

? on Chemistry
I understand that's what happens....but I thought that it means there is an overall increase in the product since it is higher than what I started with. However my webassign says it doesn't increase in concentration....so then is it considered to decrease? Here is my ...

? on Chemistry
If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an endothermic ...

Cemistry
If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an endothermic ...

biology 102
This is all stuff that can be easily researched within a few minutes...try doing that on google or something rather than have someone else do your homework for you.

Please help!!! ASAP
This is for a project for Beginning Algebra at Great Bridge Middle School 8th grade class. Here's the questions: The number of companies offering cell phone service has grown rapidly in recent years. The plans they offer vary greatly and it can be difficult to select the ...

Bus/210
• Write a 200- to 300-word description of a business scenario, either real or fictional, that depicts each of the following forms of business organization: • o Joint-stock company o Limited liability company o Partnership o Sole proprietorship

HCA 220
You are an allied health professional working with an endocrinologist. You have been working with the patient and need to update the doctor on the reason for the patient’s visit. Begin describing the patient’s concerns.

soc101
of the differents forms of social structure described by durkhiem, tonnies and lenski which comes closest to matching your social setting

Math
One card is selected at random from an ordinary set of 52 cards. Find the probability of each of the following events: b. A spade and a 5 are drawn. d. A jack is not drawn.


biology
why do plants produce far more sugar than they need? why do they not stop photosynthesis once immedaite needs are met?

math
You need to choose between two phone plans for local calls. Plan A charges $25 per month for unlimited calls. Plan B charges a monthly fee of $13 with a charge of 6 cents per local call. How many local phone calls in a month make Plan A the better deal?

math
A truck can be rented from basic rental for $50 a day. in addition you have to pay .20 cents per mile. Cont. truck charges $20 per day in addition to 50 cents per mile. How many miles must you drive in a day to make the rental cost for basic a better deal than Cont.?

Finance
I need help with number 7 on the worksheet for Ziggler case study

survey of mathematics
Awer

geography
A PORTION OF THE OCEAN THAT'S ENCLOSED OR PARTLY ENCLOSED BY LAND

business
In a physicians office performing billing if the guidelines haven't been followed accurately in completing claim form what happens if not corrected?

critical thinking
WHAT BACKGROUND INFORMATION CAN YOU HAVE ABOUT CLAIMS

math
Posted by connie on Monday, July 20, 2009 at 11:56pm. Find the indicated outputs for f(x) = 2x²-4x f(0)= ____? f(-1) =____? f(2) =____? Responses math - Reiny, Tuesday, July 21, 2009 at 8:00am f(0) = 2(0)^2 - 4(0) = 0*0 = 0 f(-1) = 2(-1)^2 - 4(-1) = 2(1) + 4 = 2 + 4 = 6 ...

math
Reiny I'm still lost i only got so far. f(2)=2(2)^2-4(2) =2(2) from their on i'm lost please help

math
Find the indicated outputs for f(x) = 2x²-4x f(0)= ____? f(-1) =____? f(2) =____?

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