# Posts by MAry

Total # Posts: 3,822

**Please help how do I calculate this**

Calculate the Calorimeter Constant (Ccal) if 25.00 g of water at 51.50°C was added to 25.00 g of water at 25.00 °C with a resulting temperature of 35.00 °C? (*remember the specific heat capacity of water (cwater) = 4.180 J/g°C)

**financial management**

I have to do a revenue and expense statement and balance sheet for 2 years I have find the dollar differences and the percentage rate. My mind is a blank I do not remember how to find the percent of financial statements. Is it the same as finding the percent in anything else?

**PSYCHOLOGY IN SOCIAL LIFE**

Just took the test and #2 is A

**phil 103**

true

**phil 103**

Logic can help analyze ethical problems. (Points : 1)

**phil 103**

A radical skeptic might be willing to doubt which of the following? (Points : 1)

**phil 103**

examinind reasons and constructing arguments can help in everyday life

**conclusion**

A good way to establish a conclusion as true, or probable, is to (Points : 1)

**Maths**

what is the value of "a" if the equation (9+i)x^2+(a-i)x+36-2i=0 has real roots?

**math**

I gave a test that had 50 items on it. I can only enter a grade of 20 total points if all are answered correctly. So, how much would each answer be worth?

**math**

A box contains 4 red pens, 5 blue pens, and 9 green pens. Two pens are drawn out of the box without replacement. What is the probability of drawing a red pen on the first draw and the same color pen on the second draw?

**English Pls Writeacher Help me by checking my work**

Please replace the incorrect words with correct words in the following sentences using AP Style. There may be more than one error per sentence; all sentences contain at least one error. Use correct AP style, punctuation, grammar and spelling errors.) 1. Original: California&#...

**Math Help**

Permutation and combinations (Trig/alg2 class) In how many ways can all the letters in SEYCHELLES be arranged?

**Physics-Simple pendulum**

We're supposed to make a simple pendulum with a period of 24 seconds. So i attached a hardware bolt at the end of a string. The teacher is going the start the timer once we release the pendulum and wait until it returns to its maximum again. In our calculations we need to ...

**statistics**

Suppose that a marketing firm sends questionnaires to two different companies. Based on historical evidence, the marketing research firm believes that each company, independently of the other, will return the questionnaire with a probability of 0.30. What is the probability ...

**statistics**

Suppose that a marketing firm sends questionnaires to two different companies. Based on historical evidence, the marketing research firm believes that each company, independently of the other, will return the questionnaire with a probability of 0.30. What is the probability ...

**financial statements**

marketable securities are sold above cost

**elementary algebra**

(3b+1)^2=16

**florida**

On December 31, 2010, XYZ made the following cash payments: •$100,000 for a two-year office lease beginning on February 1, 2011

**math**

The ratio of girls to boys in a class is 2:3, and you know there are 6 girls, how many boys are in the class?

**calculus**

What is the antiderivative of. 3X/x^2?

**chemistry**

briefly explain the problem that will be created if you (a) mark the origin line with a washable flet-tip markromatogram until after you discover that the solvent front has reached the top of the paper.

**flordia**

XYZ Manufacturing, Inc., located in Centervale, uses the calendar year and the cash method of accounting. On December 31, 2010, XYZ made the following cash payments: •$100,000 for a two-year office lease beginning on February 1, 2011 •$58,000 of inventory items held ...

**English Pls Writeacher Help Me by checking my work**

Ok thank you very much.

**English Pls Writeacher Help Me by checking my work**

no my teacher did say anything about the address but here is what what put out about this assignment Using the first scenario from your lede writing assignment, write a news story in inverted-pyramid style. Begin your story with a summary news lead of no more than 20 words ...

**English Pls Writeacher Help Me by checking my work**

write a news story in inverted-pyramid style. Begin your story with a summary news lead of no more than 20 words and then write a full story using inverted pyramid style. Using the scenario below. A home at 2481 Santana Avenue was burglarized between the hours of 1 p.m. and 4 ...

**English (Help Me, Help Me,Please Somebody Help Me)**

write a news story in inverted-pyramid style. Begin your story with a summary news lead of no more than 20 words and then write a full story using inverted pyramid style. Using the scenario below. A home at 2481 Santana Avenue was burglarized between the hours of 1 p.m. and 4 ...

**English (Help Me, Help Me,Please Somebody Help Me)**

write a news story in inverted-pyramid style. Begin your story with a summary news lead of no more than 20 words and then write a full story using inverted pyramid style. Using the scenario below. A home at 2481 Santana Avenue was burglarized between the hours of 1 p.m. and 4 ...

**English (Help Me, Help Me,Please Somebody Help Me)**

Hi sue im sorry im at work that why it taken me a long time to respond but i just got off work . and to answer ur question, no i don't really kno what is 5 W

**English (Help Me, Help Me,Please Somebody Help Me)**

no some one to help me

**English (Help Me, Help Me,Please Somebody Help Me)**

write a news story in inverted-pyramid style. Begin your story with a summary news lead of no more than 20 words and then write a full story using inverted pyramid style. Using the scenario below. A home at 2481 Santana Avenue was burglarized between the hours of 1 p.m. and 4 ...

**Maths**

Pipe A takes twice the time to fill up the pool as pipe B does.The pool can be filled up in 2 h when both pipes are opened How long will it take each pipe to fill it up alone Plz slove it in Linear equation

**chemistry**

Oxygen vapor combines with hydrogen gas to produce liquid water. If 50.0 g of oxygen combines with 105 L of Hydrogen gas (at STP) how many grams of water could be produced?

**Chemistry**

How many liters of oxygen are required to react completely with 5.9 L c3H8?

**algebra2**

the denominator of a fraction is 3 less than twice the numerator. if the numerator is doubled and the denominator by 8, the resulting would be 2/3. find the original fractions

**math**

the americans with disabilities act requires wheelchair ramps no greater than 1 over 12 or 1/12 .whta is the minimum horizontal length 2-foot-high ramp can have?

**Mathematics**

ur mama jk hahahahaha help me answer my question and ill tellu urs i promise iknow what it is its easy i learned that like 5 months ago. no offense

**ethics**

Principles that when followed, promote values such as trust, good behavior, fairness, and/or kindness. found this for ethical standards, is that it?

**ethics**

I don't understand, what other question? the second one? But for that one I don't quite understand what it's asking! Again, what is the ethical standard?

**ethics**

So if I choose Mill, he believes that we should weigh all the consequences and that the good of the many outweighs the good of the few. Would that be considered as his "recipe" or "methods"?? For the second part, is the teacher talking about the ambiguity ...

**ethics**

Simone de Beauvoir warns against “ethical recipes,” suggesting instead that life and ethics are both inherently ambiguous. Choose one of the ethical “recipes” or “methods” offered by Manning, Kant, Mill. What ambiguities remain even after the ...

**Philosophy HEELLLPPP!!**

Simone de Beauvoir warns against “ethical recipes,” suggesting instead that life and ethics are both inherently ambiguous. Choose one of the ethical “recipes” or “methods” offered by Manning, Kant, Mill. What ambiguities remain even after the ...

**Fundamentals of Interpersonal Communications - 170**

• a room that would facilitate team interaction. How would this room look? • How would the room be arranged? • What would the seating arrangement look like? • What colors or decorating schemes would be used? • How would this setting communicate ...

**chemistry**

If something originally contained 32.0 g of Po-210, which has a half-life of 10.5 minutes, and was now 73.5 minutes old, how many grams would be left?

**Polynomials**

Let f(x) be a polynomial such that f(f(x))−x^2 =xf(x). Find f(-100)

**Math**

1. What is the total sales tax to be paid in 2012 on the purchase of a 2012 passenger vehicle with a selling price of $17,000 and a $2,000 trade-in allowance?

**statistics**

A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.07 ounce. You can allow the cup to overfill 2% of the time. What amount should you set as the mean amount of coffee to...

**statistics**

a basketball scout randomly selected 144 players and timed how longeach player took to perform a certain drill. The times in the sample were distributed with a mean of 8 mins. The population standard deviation was known to be 3 minutes. Using a 95% confidence interval, ...

**Algebra**

A car rental agency advertised renting s car for %26.95 per day and @0.34 per mile. If David rents this car for 4 days how many whole miles can he drive on a $150 budget?

**social studies**

thank you

**social studies**

what are some exploration thomas jefferson made, and thomas jefferson federal courts information

**Physicss**

a typical woman gives off heat at rate of about 8000 calories per hour. how long would a woman have to stay in a bath of 60L (60,000 g) of 26 C water in order to raise the water temperature to 30 c ? presume that all the heat given off by the woman is transferred to the water...

**Physics**

Donny can you tell us the formula for 1)f) B_0 please?

**Interest**

It’s time to go shopping! You grab your Best Purchase credit card, which has an annual interest rate of 18%. The unpaid balance on your card for the current billing cycle is $285.76. On your shopping trip, you purchase four items: a Blu-ray player, two 4-GB flash drives, ...

**math**

A manufacturer produces ceiling fans at a cost of $38.25 per fan. During the summer months, it sells the fan in one of its retail outlets at a selling price of $55.00. However, during the fall and winter seasons, the manufacturer discounts its fans by 20% off the $55.00 ...

**math**

1. Calculate the interest charge on a $5,000 balance with your current 16.5% annual interest rate. 2. Calculate the interest charge on a $5,000 balance with the Visa Student Card’s annual interest rate of 10.8%.

**health information**

I need to research the root cause of disease classification structure and how it is linked to the outcomes of both the reimbursement and the epidemiological data. how do I research these topics? Or can you explain these instructions better? I asked the instructor no response ...

**5th grade math**

3556. Hope this helped! :)

**Algebra**

What is the sum of all positive integers N<=1000 such that N equals 13 times the digit sum of N ?

**Math**

Alonzo plans to retire as soon as he has accumulated $250,000 through quarterly payments of $2,500. If Alonzo invests his money at 5.4% interest, compounded quarterly, when (to the nearest year) can he retire?

**physics**

In trying to lift a heavy stone into a moving truck, a worker utilizes rope, a rug, and two long planks of wood. Identify what forces are at work in making it too hard for the worker to just lift the stone up on his back.

**earth science**

Why do deciduous trees lose their leaves in the fall?

**Eng B**

D. is wrong I just took the exam

**science**

an object moving at a speed of 1m/s has a kinetic energy of 5 J what is its kinetic energy when it moves at 3m/s

**Math**

42

**Math**

need more information!

**math**

simplify the expression 14/(3x)+(x+5)/(3x)

**Pre-Calculus**

Simplify arctan 1/3 + arctan 2/3(round to the nearest degree).

**Trig**

Thank you <3 you are a lifesaver!

**Trig**

Whoops I forgot to include the diagram...here it is: i.imgur [dot] com/RRY5pox.png

**Trig**

This has to do with vectors...I'm wondering if I set up the diagram correctly? A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading of the plane?

**Trig**

This has to do with dot products (I can't make the arrow above the u, i, or j). Given u = 4i - 6j and v = -3i + 5j, find 4u-(1/2)v Am I just supposed to plug in what u and v are equal to in 4u-(1/2)v? If so, is the answer (35/2i - 53/2j)

**presential esential**

Explain why academic and professional research must use credible sources.

**presentation essential**

answer all my question

**presentation essential**

dentify and evaluate the three specific credible sources of information on that topic based on the information on evaluating sources in your textbook on pages 179 – 181. Identify and discuss the criteria that were used to evaluate those three sources and provide evidence ...

**Algebra**

I have four problems I'm having trouble with. I need to solve the equations by completing the square. 1) w^2 - 5w = 11/4 2) z^2 + 11z = -21/4 3) k^2 - 8k - 7 = 0 4) v^2 - 7v + 1 = 0

**math**

Usually you will be given the area of the irregular base. If so, it would be the area of the base x height.

**maths**

The basic formula for a rate/distance/time formula is rate x time = distance bomber: 500 k/hr x (t+2.5)hours = distance (t=time, and the bomber flew 2.5 hours longer than the fighter) fighter: 750 k/hr x t hours = distance Since the two distances are the same, the two ...

**Trig**

Using law of sines, this is what I got: x/sin37° = 100/sin10° x = 346.6 ft h/sin47° = 346.6/sin90° h = 253.5 ft Is this wrong...?

**Trig**

From a certain distance from the base of a Giant Sequoia tree a surveyor determines that the angle of elevation to the top of the tree is 47deg. The surveyor then walks 100 feet away from the tree and determines that the angle of elevation to the top of the tree is now 37deg. ...

**Calculus 1A**

The problem is: Verify the given linear approximation at a=0. Then determine the values of x for which the linear approximation in accurate to within 0.1. LN(1+x) ≈ x I found f(0) = 0 and f'(0) = 1 I have an equation: LN (1+x) -(.1) < x < LN(1+x) + 1 The answer...

**Math**

A rhombus is a square that has been somewhat flattened (look it up on the Internet). It has 4 equal sides, just like a square. If all of the sides added together equal 64, and if all four sides are equal to each other, what is 64 divided by four sides?

**U.S/history AP**

What is your question, exactly?

**parametric equations**

On what intervals of t is the curve described by the given parametric equation concave up? Concave down? x=t^2; y=t^(3)+3t

**Quantum Physics**

Problem 5 plz

**Calculus 1A**

I am so confused! The problem is: Verify the given linear approximation at a=0. Then determine the values of x for which the linear approximation in accurate to within 0.1. LN(1+x) ≈ x I found f(0) = 0 and f'(0) = 1 I have an equation: LN (1+x) -(.1) < x < LN(1...

**Finding the distance**

Find the distance d(P1,P2) between the points P1 and P2 P1=(-1,5);P2=(2,4) d(P1,P2)=

**math 5the grade**

victoria has 2 pounds of flour she uses 2/5 of the flour on pizza and then uses 3/10 of the flour for bread. Find the weight of the package of flour that she has left, express in decimal answer.

**Math**

I am not sure. That's what the questions says

**Math**

You bought an oil company stock for $83K per share. The price of the stock lost $16M during a six month period. Find the price of the stock at the end of the six months. How do I do this?

**Trig**

Solve the equation on 0° ≤ θ < 360° and express in degrees to two decimal places. sin(2θ) = -0.7843 I've gotten 308.345° (QIV) and 231.655° (QIII). I'm unsure how to get the answer though? The final answer is: 115.83°, 295.83°...

**Chem**

how do you find the molarity of NaOH if 23.64ml of its solution is needed to neutralize .5632g of KHC8H4O4?

**Science**

The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).Sn(s) + Cl2(g) --> Sn Cl2(l) DH = -186.2 kJSnCl2(s) + Cl2(g) --> SnCl4(l) DH = -325.1 kJWhat is the ...

**math - college algebra**

If the rational function y = r(x) has the vertical asymptote x = 9, then as x →9+, either y → ____or _____

**Quantum Physics**

5A i 0 0 -i 5b -i 0 0 i 5C -1 -1 -1 3a is 2nd option 3b is 2nd option 6C,6D,8C,8D please

**Quantum Physics**

6C,6D,8C,8D please..

**Algebra**

What is the correct factorization of x^2(x-8)+5(8-x)?

**Algebra**

Explain how to factor the difference of two squares.

**chemistry**

How much water must be added to 440. mL of 0.204 M HCl to produce a 0.139 M solution? (Assume that the volumes are additive.)