Tuesday

July 22, 2014

July 22, 2014

Total # Posts: 156

**Calculus**

Find the area of the region enclosed by the parabolas y=x^2 and y+2x-x^2

**Calculus**

2x -------- (x-2)(x+2) using partial fractions That's supposed to be a division sign of some sort

**Calculus**

xe^x using integration by parts

**Physics **

1. A car decelerates at -3.8 without skidding when coming to rest on a level road. What would be its deceleration if the road is inclined at 9.3° and the car moves uphill? (Asume the same static friction coefficient and the car is on the verge of skidding)

**math**

How many edges are in K15, the complete graph with 15 vertices

**Math**

Mr. Thomas spent 1600.00 of his savings on a TV and 2/5 of the remainder on a refrigerator. He had 1/3 of his original amount of savings left. What was Mr. Thomas's original savings?

**Biology**

What could be a benefit for a plant that can switch between cyclic and non-cyclic electron transport? Think about the products of electron transport and what products are needed for the Calvin Cycle.

**Chemistry**

Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 6 to n = 1.

**Algebra**

Multiply: -8(2a+4b-6)

**math**

is the formula "y=x to the 7th power" an example of a proportional relationship?

**t-test**

For a single-sample t-test the t(17) = 2.90, p<.02, how many were in the study?

**statistics**

Want to find if students who are musicians have higher Iq test scores than the general population. the researcher predicts that playing music is associated with higher IQ scores. the researcher selects a sample of 75 musicians from area and gives them an IQ test. The mean for ...

**Probability**

The probability that an individual egg in a carton of eggs is cracked is 0.05. You have picked out a carton of 1 dozen eggs (that’s 12 eggs) at the grocery store. Determine the probability that at most two of the eggs in the carton are cracked

**Probabilities Help**

The probability that an individual egg in a carton of eggs is cracked is 0.05. You have picked out a carton of 1 dozen eggs (that’s 12 eggs) at the grocery store. Determine the probability that at most two of the eggs in the carton are cracked

**Probabilities Help**

The probability that an individual egg in a carton of eggs is cracked is 0.05. You have picked out a carton of 1 dozen eggs (that’s 12 eggs) at the grocery store. Determine the probability that at most two of the eggs in the carton are cracked

**algebra**

Determine the comparable interest rate for a $50,000 loan when the quoted information is 11.4% + 0.5 pt + $300.

**economics**

The relationship between consumer expectations and economic performance: Worsening expectations of changes in income might lead to a reduction in confidence and a fall in spending at each level of income. Conversely an improvement in consumer expectations about the health of t...

**Physics**

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?

**Physics**

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?

**Physics**

If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ro...

**Physics**

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D? No one has answered this question yet.

**physics**

If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ro...

**math**

Find (gof)(-2) f(x)=Squareroot of 4-x; g(x)=1-3x^2

**math**

What is the domain of the function f(x)=11/Squareroot of 4-x^2 a.(-11,11) b.[-11,11] c. (-2,2) d. [-2,2] What is the range of the function? y=8/Squareroot of 4-x^2 a. [4, infinity) b. (-infinity, 4] c. [8, infinity) d. (-infinity, 12] e. [6, infinity) f. (-infinity, 6]

**Math/Algebra**

y^2+6+2(y^2+5) My answer is 3y^2+16 (simplifying) but the hawkes learning system won't accept this answer. Am I missing something?

**Calculus Voulme**

find the volume of the solid generated by revolving the region r bounded by the graphs of the given equations about the y-axis. x^2+y^2=1 x=1 y=1

**calculus derivatives**

Please confirm: {(5x+2)^4/x^2-3x+1)^3}= 20(5x+2)^2(x^2-3x+1)^3 -3x^2(5x+2)^4 (x^2-3x+1)^2/(x^2-3x+1)^6

**algebra**

Joey is flying a kite that is attached to a string 200 yards long. The kite is as high as it can go and is flying directly above Joey's house which is 50 yards in front of Joey. How high above the ground is the kite?

**Physics**

Six light bulbs are connected in parallel to a 9.0 V battery. Each bulb has a resistance of 3.0 ohms. What is the current in each bulb?

**math**

how to factor w^2r^2-1

**Chemistry**

A 1 kg block of ice, at 0.0 celcius is added to a picnic cooler. How much heat will the ice remove as it melts into water at 0.0celcius?

**Chemistry**

What volume of 3.0M sodium hydroxide will be needed to neutralize 2.0 L of 1.0M hydrochloric acid?

**Literacy**

11. In the article, "How Lethal Was the K-T Impact?" by Richard A.Kerr and Virginia Morell, what is listed as part of the related subject matter? The answer is: D. Asteroids

**Math**

Use a radius of 50 and 3 for pi to estimate the area. Then use a radius of 40 and 3 for pi to estimate the area. Is your answer reasonable? Why?

**Literacy**

A strong search strategy for a search engine would include which of the following? The Answer is: D. Using quotation marks, hyphens, and unique words

**Literacy**

19. Which of the following keyword searches should retrieve the most results in an online database? A. Beta B. Beta OR blockers C. Beta NOT blockers D. Beta AND blockers Answer: B

**physics**

Lasers are used to try to produce controlled fusion reactions. These lasers require brief pulses of energy that are stored in large rooms filled with capacitors. One such room has a capacitance of 64 10-3 F charged to a potential difference of 7 kV. (a) Given that W = 1/2C[...

**ETHNIC DIVERSITY**

This is honestly the first of its kind in regards to this situation I have came across in my year of attendance. I have had similar classes, but the assignments have all been relevant to today's world and research has been "easy" in comparison. At least in my oth...

**ETHNIC DIVERSITY**

I appreciate what you are saying. I did contact my instructor asking for any insight into what might be considered either "credible" information regarding this or even a push in the right direction to finding information on policy. The only response I received was to...

**ETHNIC DIVERSITY**

I agree completely. Honestly I have researched this for 2 days and can find nothing regarding recent (within the past 2 years) regarding this. It has to be noted this comes from a text book that was published in 2006, and from what I am finding this question has been around si...

**ETHNIC DIVERSITY**

I am trying to locate credible information in regards to the following question. Please note, I do not want the answers, just possible locations that might provide me with a place to start looking as I can not find anything recent. According to research and news reports within...

**math**

-34

**math**

An arcade uses 3 different colored tokens for their game machines. For $20 you can purchase any of the following mixtures of tokens: 14 gold, 20 silver, and 24 bronze; OR, 20 gold, 15 silver, and 19 bronze; OR, 30 gold, 5 silver, and 13 bronze. What is the monetary value of ea...

**Chemistry**

Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X-98 has a mass of 98.0001u and an abundance of 19.8%, what are the abundances of X-96 (mass of 95.9988u) and X-95 (mass of 95.0011u)?

**Chemistry**

Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X-98 has a mass of 98.0001u and an abundance of 19.8%, what are the abundances of X-96 (mass of 95.9988u) and X-95 (mass of 95.0011u)?

**Chemistry**

Element X has three istotopes, X⁹⁵, X⁹⁶, and X⁹⁸. Element X has an atomic mass of 96.344u. If X-98 has a mass of 98.0001u and an abundance of 19.8%, what are the abundances of X-96 (mass of 95.9988u) and X-95 (mass of 95.0011u)?

**Chemistry**

Nitrogen effused through a pinhole 1.7times as fast as another gaseous element at the same conditions.Estimate the other element's molar mass. Answer in units of g/mol

**Chemistry**

.2757g

**Chemistry**

A 23 L flask at 254 K and 19 Torr contains nitrogen. What mass of nitrogen is present? Answer in units of g.

**calculus**

Find equations for the lines that are tangent and normal to the graph of y = sinx + 3 at x = pi

**math**

Find the volume of a cone with a height of 7.1 m and a circular base whose radius is 3.2 m. Use 3.14 for pi.

**Social STUDIES**

in kennedys inaugural address what was the first revolution president kennedy spoke of was it the american revolution,the emancipation proclamation,the war of 1812

**grammar**

e. the sentence is fine as it is.

**English**

Can you tell me if I have this correct? I have to identify the adjectives and adverbs in this paragraph. Adjectives: early first huge high several Adverbs: monthly severely monthly ridiculously eventually immediately monthly Like so many people, early in life I was not very re...

**algebra**

F(4)=8 what is the ordered pair

**literature**

In the book code orange: How do they cure the small pox?

**Chemistry**

you have to find the Ksp in the back of your chemistry book.

**need help**

I have this equation y+x=-7 I have to graph my answers to find out what my y is. I have tried everything, and I cannot get my points to cross. Any help would be great.

**health HCA/210**

Thank you for the help. I think there is enough information to get me started. This is my first time using this site and I found it very interesting!

**health HCA/210**

I have a 10 to 12 powerpoint slide due next week and I just wanted to get started on it. I need to explain where health insurance began, the purpose of health insurance, and I have to list the advantages and disadvantages to HMOs, Managed care, PPOs, POS, and Tricare. Any help...

**biology**

If a brown-eyed man marries a blue-eyed woman and they have ten children, all brown-eyed, can you be certain that the man is homozygous? If the eleventh child has blue eyes, what will that show you about the father’s genotype?

**Marketing **

Describe how companies have used marketing data to target wants and need.

**agriculture**

can you unscramble this. It has to do with farming. dgpcrtouins

**Gender **

How does the English language that is spoken in the US accomplish that men are portrayed as independent and serious, and are defined and described by activities and accomplishments?

**english**

select the sentence in which the verb correctly agrees with the subject.

**physics**

An 9.0 m, 210 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50.0° angle with the ground. How far up the ladder can an 890 N person climb before the ladder begins to slip?

**Communication and Listening Studies**

Thanks for the reply! :) This is what I'm trying to figure out. There are no choices, we just have to determine how our listening would be impacted while communicating with someone 20 years older. I am 22. How old are you? What would impact our listening if we were to list...

**Communication and Listening Studies**

When a speaker is 20 years older that the person listening, the listener's ability to listen is affected by what factors?

**american government**

Consider the phrases “A belief in equal rights has often led to the belief in equality of opportunity;” and “American society does not emphasize equal results or equal rewards;” on p. 141 of the text. Explain these conceptions of equality in 200 to 300 word...

**Data Management gr. 12**

I am so confused about correlation equations. I dont know at all how to use them r= W (x-xXy-y)=Sxy __________________ n *the equation doesnt look exactly like this but it is similar, if i can get any help at all that would be great example question:

**math**

trying to unscrable the letters jeatdcn into a math word

**Geometry-PLEASE CHECK ANSWERS!**

In isosceles triangle DEF, DE=DF. Which of the following is true? 1) <D is congruent to <E 2) <F is congruent to <E 3) <D is congruent to <F 4) <D is congruent to <E which is congruent to <F Is the answer (3)? In triangle ABC, if line AB is congruent...

**math**

1. 3y=13divided by 2=>y= 2. 6divided by 15=12divided by y =>y= 3. 8 divided by 5 y - 4 = 20 =>y = 4. 3:8= y:32 =>y=

**Calculus**

square root of (1-u squared)

**pre calc**

13-5e^2x=3

**Algebra Help**

2x^2 + 4x – 1 = 0

**Algebra Help**

Solve. Find the exact solution(s). Simplify as much as possible. Show work. 2x^2 + 4x – 1 = 0

**Algebra**

Solve. Find the exact solution(s). Simplify as much as possible. Show work. 2x^2 + 4x – 1 = 0

**Algebra**

A contagious disease is infecting residents of a town of 7,300 residents. The number of residents infected t days after the disease has begun is given by the function f(t)=(7300)/1+500e^-0.5 t How many residents are infected with the disease after 6 days?

**Algebra**

I was thinking that as well! Thanks!

**Algebra**

I do not think these answers are right. I get somethin else and 5 is not an option. Here are the choices A. Minimum is 25 B. Minimum is -51 C. Maximum is -1 D. Maximum us -51

**Algebra**

Consider the quadratic function f(x) = – x^2 + 10x – 26. Determine whether there is a maximum or minimum value and find that value.

**Algebra**

If this was a -f(x) then it would be odd? I think I understand now..Am I correct?

**Algebra**

Yes I read them, but misinterpreted them I suppose. So this is an even function because x is being represented rather than y and this would be an even function resulting in a reflection in the y-axis? I will sketch it out.

**Algebra**

So I would say that the answer would be that f can be both odd and even then. Am I correct?

**Algebra**

A. f is an odd function B. f is an even function C. f is neither odd nor even D.f is both odd and even Totally confused and would appreciate some insight. Thanks!

**Algebra**

Confused Please Help! Thanks! Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function C. f is neither odd nor even D. f is both odd and even

**Algebra**

Thank yoU!

**Algebra**

What is the answer? I came up with C. is this correct? Thanks for the help in advance! f(x)=root sign, and inside that x-2 and g(x)x-7. Which of the following is the domain of the quotient function f/g? A. (-infinity,2] B. (-infinity,7) U (7,infinity) C. [2,7) U (7,infinity) D...

**Algebra**

What was the answer? Thanks

**Algebra**

f(x)=root sign, and inside that x-2 and g(x)x-7. Which of the following is the domain of the quotient function? A. (-infinity,2] B. (-infinity,7) U (7,infinity) C. [2,7) U (7,infinity) D. (2, infinity)

**Biology (urgent)**

What is another name for food for bacteria? It's a suffix for multi-

**Algebra**

This is interesting, I got the first one correct for y = -5 because x = 0 but still do not get how you come up with 5/2 for the slope of the parallel line and the slope of the perpendicular one either? Can you please explain. Thanks!

**Algebra**

(a) Find the y-intercept for the given line. (b)Find the slope for a line parallel to the given line. (c) Find the slope for a line perpendicular to the given line.

**Algebra**

Consider the line with equation 5x – 2y = 10. (a) Find the y-intercept for the given line. (b) Find the slope for a line parallel to the given line. (c) Find the slope for a line perpendicular to the given line.

**Algebra**

I need to find the quotient function of the following: Given that f(x)=x^2-3 and g(x)=2x+1 find each of the following if it exists: a. (f/g)(-root3) b. (g/f)(-1/2)

**Algebra**

Given that f(x) = x^2 -3 and g(x) = 2x+1, find each of the follwing, if it exists. Problem 1 (f/g)(-root3) Problem 2 (g/f)(-1/2)

**Algebra**

Given that f(x) = x^2 -3 and g(x) = 2x+1, find each of the follwing, if it exists. Problem 1 (f/g)(-root3) Problem 2 (g/f)(-1/2)

**Algebra**

Given that f(x) = x^2 -3 and g(x) = 2x+1, find each of the follwing, if it exists. Problem 1 (f/g)(-root3) Problem 2 (g/f)(-1/2)

**Math**

What method would be used in financial reporting and would not involve salvage value until the last year of an asset's useful life?