Sunday

August 31, 2014

August 31, 2014

Total # Posts: 1,326

**Statistics**

An opinion poll asks a random sample of 100 college seniors how they view their job prospects. In all, 53 say "Good." The 95% confidence interval has a margin of error of 9.9%. The sample used actually included 130 college seniors but 30 of the seniors refused to ...
*November 11, 2013*

**AP Chemistry**

How do you determine the heat of solution for a substance? how can we report this answer in both kJ/g and kJ/mol? thank you!!!
*November 11, 2013*

**Statistics**

We conducted a hypothesis test for a population parameter at alpha = 0.05 and we failed to rejected Ho. If we decided to use alpha = 0.10, how would our conclusion change? A) At alpha = 0.10, we would still fail to reject HO. B) At alpha = 0.10, we would reject HO. C) It is ...
*November 11, 2013*

**Statistics**

We conducted a hypothesis test for a population parameter at alpha = 0.01 and we failed to rejected Ho. If we decided to use alpha = 0.05, how would our conclusion change? A) At alpha = 0.05, we would still fail to reject HO. B) At alpha = 0.05, we would reject HO. C) It is ...
*November 11, 2013*

**Check my CALCULUS work, please! :)**

Question 1. lim h->0(sqrt 49+h-7)/h = 14 1/14*** 0 7 -1/7 Question 2. lim x->infinity(12+x-3x^2)/(x^2-4)= -3*** -2 0 2 3 Question 3. lim x->infinity (5x^3+x^7)/(e^x)= infinity*** 0 -1 3 Question 4. Given that: x 6.8 6.9 6.99 7.01 7.1 7.2 g(x) 9.44 10.21 10.92 -11.08...
*November 11, 2013*

**CALCULUS**

If you could give an explenation with the answers, that'd be wonderful so I actually know how to solve similar problems in the future. :) Thank you so much! 1. A convex lens with focal length f centimeters will project the image of an object on a point behind the lens. If ...
*November 10, 2013*

**CALCULUS**

Could someone please solve these four problems with explanations? I'd like to understand how to get to the answers. Thank you! Without using a calculator: For each of the following, find: I. lim x->a- f(x) II. lim x->a+ f(x) III. lim x->a f(x) A. f(x)=|x^2+3x+2|/x...
*November 10, 2013*

**Pre-Calc**

Determine the one sided limit of f(x) s x approaches -2 from the right side. F(X) = (x^2-2x+4)/(x^3+8). I do not know where to begin. Should I plug in the one side limit?
*November 9, 2013*

**Physics**

A block whose weight is 34.0 N rests on a horizontal table. A horizontal force of 27.2 N is applied to the block. The coefficients of static and kinetic friction are 0.600 and 0.472, respectively. Will the block move under the influence of the force, and, if so, what will be ...
*November 7, 2013*

**Physics**

he weight of the block in the drawing is 77.0 N. The coefficient of static friction between the block and the vertical wall is 0.490. (a) What minimum magnitude of the force is required to prevent the block from sliding down the wall? (Hint: The static frictional force exerted...
*November 7, 2013*

**AP World History**

Thank you!! <3
*November 7, 2013*

**AP World History**

is Imperial Rome the same thing as Ancient Rome?
*November 7, 2013*

**Calculus - #6**

If the following function is continuous, then what is the value of b? g(f)={2t^2+2t-24 if f≠3 {b if f=3 0 3 7 14 None of these If the following function is continuous, then what is the value of a? h(f)={2t+b if f<0 {2cos(f)-3 if 0≤f≤(pi/2) {asin(f)+5b if f...
*November 6, 2013*

**Calculus - #5**

If h(x) is equal to (x^2-4)/(x+2)when x ≠ –2, and h(x) is continuous for all real numbers, then what is the value of h(–2)? 0 –2 –4 2 This is impossible. There is an infinite discontinuity at x = –2.
*November 6, 2013*

**Calculus - #4**

Suppose g(x)={1/(x-2) if x<1 {2x-4 if x≥1 The best description concerning the continuity of g(x) is that the function: is continuous. has a jump discontinuity. has an infinite discontinuity. has a removable discontinuity. None of these
*November 6, 2013*

**Calculus - #3**

Suppose g(x)={1/(x-2) if x<1 {2x-3 if x≥1 The best description concerning the continuity of g(x) is that the function: is continuous. has a jump discontinuity. has an infinite discontinuity. has a removable discontinuity. None of these
*November 6, 2013*

**Calculus - #2**

Suppose g(x)={x^2+2x+1/x+1 if x<1 {2x if x≥1 The best description concerning the continuity of g(x) is that the function: is continuous. has a jump discontinuity. has an infinite discontinuity. has a removable discontinuity. has both infinite and removable ...
*November 6, 2013*

**Calculus - #1**

Would it be infinite?
*November 6, 2013*

**Calculus - #1**

Suppose g(x)={1/x+1 if x<1 {2x-1 if x≥1 The best description concerning the continuity of g(x) is that the function: is continuous. has a jump discontinuity. has an infinite discontinuity. has a removable discontinuity. has both jump and infinite discontinuity.
*November 6, 2013*

**Physics**

You stick a paper onto a fridge with a magnet. There are two free body diagrams, one for the paper and one for the magnet. What are the forces acting on each object, which way do they point?
*November 3, 2013*

**Physics**

You stick a paper onto a fridge with a magnet. There are two free body diagrams, one for the paper and one for the magnet. What are the forces acting on each object, which way do they point?
*November 3, 2013*

**Physics**

You stick a paper onto a fridge with a magnet. There are two free body diagrams, one for the paper and one for the magnet. What are the forces acting on each object, which way do they point?
*November 3, 2013*

**Health**

She is a 13 (almost 14) year old girl..
*October 27, 2013*

**Health**

Say there was a girl who is about 195 lbs. and about 5'7". She only has about 2 hours out of the whole day that she has free time. She wants to be in her weight zone of between 118-148 lbs. within about 8 months without using any dietary pills. What would you ...
*October 27, 2013*

**AP World History**

How did technology impact Imperial Rome?
*October 27, 2013*

**English**

5. Complete the following sentence with a word or words that show a logical relationship. Joshua took a nap _______ sorting the mail. A. instead of B. after C. while D. before I picked D, because we cannot use while, since a person cannot sort mail while sleeping. We cannot ...
*October 25, 2013*

**English**

thanks for explaining number 19 clearly. That question was a little difficult for me.
*October 23, 2013*

**English**

# 15 the sentence is: Although it was old and needed a lot of work, Carla knew this was the house for her. 15. In this sentence, what is the antecedent of the pronoun it? A. work B. house C. Carla D. her I answered B, because the house (noun) was replaced by the word it (...
*October 23, 2013*

**English**

15. In this sentence, what is the antecedent of the pronoun it? A. work B. house C. Carla D. her I answered B, because the house (noun) was replaced by the word it (pronoun, which is considered the antecedent of the pronoun. Is my thinking correct. 17. Which of the following ...
*October 23, 2013*

**Math**

cameron is making bead necklaces. he has 90 green beads and 108 blue beads. what's the greatest number of identical necklace he can make if he wants to use all the beads
*October 21, 2013*

**English - check my answer, please. Last one :)**

"Dr. Smith had argued that the cure for insomnia could be found in the seeds of apples, and although it was not true, he had made money giving lectures." This statement: *** includes a shift in tense. is a sentence fragment. includes an inappropriate use of a comma...
*October 21, 2013*

**English - check my answer, please.**

"The study will be conducted with all haste by the Office of Public Mendacity; nevertheless, the Office will fail to blame the culpable." This statement: includes a shift in tense. *** includes a passive construction-one in which the subject receives the action of ...
*October 21, 2013*

**English - check my answer, please.**

"After I had laid in the sun for two hours each day for two weeks, however; I was finished with the idea of looking like her." This statement: has one error: a verb in the wrong form. has two errors, a pronoun with no appropriate antecedent and a verb in the wrong ...
*October 21, 2013*

**English - check my answer, please.**

Oh, sorry. It's the last one, correct? (me, I)
*October 21, 2013*

**English - check my answer, please.**

"When they came to our house to visit, although they had never met either of us before, the governor and his wife were nice to my sister and I." This statement: (Points : 1) includes an inappropriate use of a comma. includes a lack of agreement between subject and ...
*October 21, 2013*

**English - check my answer, please.**

"Wondering what to do to avoid punishment and humiliation, now that she was fully alert; Judy took the eggs out of the carton, broke them into the skillet, stirred them with a fork, and cried." This construction: includes a comma splice. includes a lack of agreement...
*October 21, 2013*

**English - check my answer, please.**

Oooooh, I see it now! "Rejected" and "rejects." Thank you! :)
*October 21, 2013*

**English - check my answer, please.**

"In Shakespeare's Romeo and Juliet, Juliet's mother rejected her, because of the power of Lord Capulet, and Juliet rejects the Nurse in the same scene, calling her a 'wicked fiend.'" This statement: has a subject and predicate that don't agree in ...
*October 21, 2013*

**English - check my answer, please.**

That's what I thought, too.
*October 21, 2013*

**English - check my answer, please.**

"Martha, Gates, and Zuggy lifted the piano onto the bed of the truck and Kate tied the legs to the frame with ropes and grounding cable and I watched from the sofa." This statement: includes an inappropriate combination of modifier and noun. includes a subject and ...
*October 21, 2013*

**English - check my answer, please.**

"Our dog LuLu had broken her leash, and rounding the corner of the house, the shrub caught her in the eye." This statement: includes an inappropriate combination of modifier and noun. *** includes a passive construction-one in which the subject receives the action ...
*October 21, 2013*

**English - check my answer, please.**

Ooooh, okay! Thank you for your explanations to help me understand it! Is it the first one?
*October 21, 2013*

**English - check my answer, please.**

"Everyone in our neighborhood mows their lawn on Saturday, and my street, as a result of that, is pretty." This construction: has one error, a pronoun with no appropriate antecedent. has two errors, a pronoun with no appropriate antecedent and a shift in tense. *** ...
*October 21, 2013*

**English**

Check my answer (***) please. :)
*October 21, 2013*

**English**

"Going to Cedar Point, fields of soy beans all around, in the seat of the car, Joyce riding, and Sue, together." This construction: has a subject and predicate that do not agree in number. *** is a sentence fragment. includes a pronoun that has no appropriate ...
*October 21, 2013*

**biology (Help please!!!)**

1. If a student pours a solution of salt water on an elodea leaf, what is it an example of? 2.A child pours salt crystals on the body of a slug he finds in the backyard. Options are: high concentration, low concentration, osmosis, diffusion, hypertonic solution, and hypotonic ...
*October 20, 2013*

**Economics**

I feel stupid
*October 19, 2013*

**Economics**

oKAY :(
*October 19, 2013*

**Economics**

PLEASE HELP ME!!!!!
*October 19, 2013*

**Economics**

Okay, I already made the window, the product, the people i'm selling to. I am soo confused I have no idea what this assignment means.
*October 19, 2013*

**Economics**

So are these things are good? Description of the Business Location Management Advertising Pricing Products or Services Methods of Distribution Target Market Personnel Legal Structure
*October 19, 2013*

**Economics**

I am really having trouble understanding this assignment.
*October 19, 2013*

**Economics**

So what does "Please list ten items you anticipate requiring for the production of your finished product." Mean?
*October 19, 2013*

**Economics**

My teacher makes general notes on the internet and he talks about them.
*October 19, 2013*

**Economics**

And the assignment was from History class to learn about Capitalism by "making" a company of our own.
*October 19, 2013*

**Economics**

If you mean text book, we do not use text books at all in the school I go to.
*October 19, 2013*

**Economics**

What book?
*October 19, 2013*

**Economics**

I believe so, but I am not sure because I do not understand the whole process of a company.
*October 19, 2013*

**Economics**

Yes it does but that was for the current question now.
*October 19, 2013*

**Economics**

I am just having a hard time trying to figure out the Capital for the company when the production is finished.
*October 19, 2013*

**Economics**

Yes you do need a lot of items to make stained glass, but I only needed to list 5 of those items.
*October 19, 2013*

**Economics**

Well the five materials used as raw materials are Copper Oxide, Cobalt, Chromium, Cadmium Sulfide, Silica (sand), and Metallic Oxide. The way they made it was by sketching the design fist, then cartooning the outlines and leadlines on the full-sized sketch. Then, they model ...
*October 19, 2013*

**Economics**

Okay let me restate my question the way it is written. Capital-Please list ten items you anticipate requiring for the production of your finished product. The production I am doing is a stained glass window company, I am trying to understand what it is asking me.
*October 19, 2013*

**Economics**

Capital- What are ten items you need to require for the production of stained glass windows when its product is finished? Please help!
*October 19, 2013*

**Economics 2**

Capital- What are ten items you need to require for the production of stained glass windows when its product is finished?
*October 18, 2013*

**Economics**

So if I find out how Stained glass windows were made in decades ago, I will know which laborers were needed?
*October 18, 2013*

**Economics**

I do not to know how it was made. I need to know what kind of labor positions are needed to make the stained glass windows.
*October 18, 2013*

**Economics**

These websites are not helping me on what kinds of labor positions needed in order to run a stained glass window company (old fashioned stained glass windows)
*October 18, 2013*

**Economics **

What are ten labor positions that you need in order to run a stained glass window company? NOTE: The type of stained glass window the company is making are made the old fashioned way not the new way.
*October 18, 2013*

**math**

A mobile shop sold one phone set everyday in the month of February and March of 2013. If each set costs $102, which of the following is closest to the money the shop earned in these two months? pick an answer that is right :/ (counfuesd) $5,000 $6,000 $7,000 $8,000
*October 16, 2013*

**math**

answer the qustion plz
*October 16, 2013*

**math**

A road is 53 km 500 m long. Out of this, 15 km 800 m is closed for repairing. How much of the road is open to traffic?
*October 16, 2013*

**language**

dosent make sense
*October 16, 2013*

**Calculus - help please! :)**

No calculators are allowed for this question.
*October 9, 2013*

**Calculus - help please! :)**

1. Given that f(x) = x^2 − 2x and that g(x) = sqrt(x-15): A. State (g • f)(x) and (g + f)(x). B. Find all vertical asymptotes of (g/f)(x). C. Determine the domain of (g ○ f)(x). D. Determine the range of (g ○ f)(x).
*October 9, 2013*

**Check my CALCULUS answers please!**

I just did some more practice problems, and got them right! Thank you so much! You made my day. :)
*October 7, 2013*

**Check my CALCULUS answers please!**

Wow... That, just made so much more sense to me with the examples you provided. I'm going to do some more practice questions knowing what you told me. My lesson didn't teach it like you just did!
*October 7, 2013*

**Check my CALCULUS answers please! **

Any short explanation for things I got wrong would be great, too, if possible! Thanks in advanced! :) 8. Which of the following functions grows the fastest? ***b(t)=t^4-3t+9 f(t)=2^t-t^3 h(t)=5^t+t^5 c(t)=sqrt(t^2-5t) d(t)=(1.1)^t 9. Which of the following functions grows the ...
*October 7, 2013*

**Calculus, please check my answers!**

Thank you so much for not only verifying my answers, but also for your great explanations! I really appreciate it! :)
*October 7, 2013*

**Calculus, please check my answers!**

1. Evaluate: lim x->infinity(x^4-7x+9)/(4+5x+x^3) 0 1/4 1 4 ***The limit does not exist. 2. Evaluate: lim x->infinity (2^x+x^3)/(x^2+3^x) 0 1 3/2 ***2/3 The limit does not exist. 3. lim x->0 (x^3-7x+9)/(4^x+x^3) 0 1/4 1 ***9 The limit does not exist. 4.For the ...
*October 7, 2013*

**math**

The sales, in millions of dollars, of a laser disc recording of a hit movie t years from the date of release is given by: S(t) = (5t)/(t^2 + 1) a) Find the rate at which the sales are changing at time t. b) How fast are the sales changing at the time the laser discs are released?
*October 6, 2013*

**Calculus help, please! **

1. Evaluate: lim x->infinity(x^4-7x+9)/(4+5x+x^3) 0 1/4 1 4 The limit does not exist. 2. Evaluate: lim x->infinity (2^x+x^3)/(x^2+3^x) 0 1 3/2 2/3 The limit does not exist. 3. lim x->0 (x^3-7x+9)/(4^x+x^3) 0 1/4 1 9 The limit does not exist. 4.For the function g(f)=4f...
*October 6, 2013*

**Calculus. Limits. Check my answers, please! :)**

4. lim (tanx)= x->pi/3 -(sqrt3) 1 (sqrt3) ***-1 The limit does not exist. 5. lim |x|= x->-2 -2 ***2 0 -1 The limit does not exist. 6. lim [[x]]= x->9/2 (Remember that [[x]] represents the greatest integer function of x.) 4 5 ***4.5 -4 The limit does not exist. 7. lim...
*October 6, 2013*

**Calculus - Limits. Check my answer, please! :)**

Suppose that h(x)={x^2-x+5 if x<2 {5 if x=2 {x^3-1 if x>2 Which of the following is equal to 7? I. lim h(x) x->2- II. lim h(x) x->2+ III. lim h(x) x->2 I only II only ***III only I and II only I, II, and III
*October 6, 2013*

**Calculus help, please! :)**

Yes, I understand that, but the question I have does not specify which limit. Right, or left. - or +. So I will assume I that -5 will be counted as correct. Thank you though for verifying that.
*October 6, 2013*

**Calculus help, please! :)**

Oh, there are 6 x values, but I forgot one. After 2.999 is 3.001. Sorry! Would -5 still be correct though?
*October 6, 2013*

**Calculus help, please! :)**

I think it's -5
*October 6, 2013*

**Calculus help, please! :)**

Consider the table of data for the function g(x),below: x: 2.9, 2.99, 2.999, 3.01, 3.1 g(x):4.41, 4.9401, 4.994, -5.006, -5.0601, -5.61 From the data given, it would appear that the lim g(x) x->3 is likely to be:
*October 6, 2013*

**physics**

On a spacecraft two engines fire for a time of 748 s. One gives the craft an acceleration in the x direction of ax = 5.21 m/s2, while the other produces an acceleration in the y direction of ay = 3.45 m/s2. At the end of the firing period, the craft has velocity components of ...
*October 5, 2013*

**physics**

After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 62.3 m horizontally from the end of the ramp. His velocity, just before landing, is 22.0 m/s and points in a direction 40.3 ° below the horizontal. Neglecting air resistance and ...
*October 5, 2013*

**Physics**

A quarterback claims that he can throw the football a horizontal distance of 187 m. Furthermore, he claims that he can do this by launching the ball at the relatively low angle of 32.4 ° above the horizontal. To evaluate this claim, determine the speed with which this ...
*October 5, 2013*

**politics**

what is a us government shutdown?
*October 5, 2013*

**CALCULUS. Check my answers, please! :)**

Thank you!! Unfortunately I couldn't wait for your response, but I went over my answers before checking to see if they were right, and I got them all right! Thank you so much for your help! It means the world to me, and will count on you if I need help on more topics in ...
*October 5, 2013*

**CALCULUS. Check my answers, please! :)**

The domain of f(x)=(1)/(sqrt(x^2-6x-7)) is (1, 7) [-1, 7] x > -1 or x < 7 ***{x < -1}U{x > 7} (-∞, -1]U[7, ∞) 2. In which of the following is y a function of x? I. y^2=9-x^2 II. |y|=x III. y=(sqrt(x^2))^3 I only II only III only ***I and III only I, II ...
*October 5, 2013*

**Calculus, check my answers, please? :)**

Oh, for 11 I chose A (first option)
*October 2, 2013*

**Calculus, check my answers, please? :)**

Okay, so I think these are right, but I would appreciate if someone could check them and tell me if something is wrong and what the right answer is. I'd also appreciate an explanation if possible. :)Thank you! 7. Given that f(x)={x^3 if x ≥ 0 {x if x < 0 which of ...
*October 2, 2013*

**Calculus, check my answers, please! **

Could someone tell me if I'm right, and if not what the correct answer is? Thank you! I'd appreciate an explanation, too, if you could. :) 1. Suppose you're given the following table of values for the function f(x),and you're told that the function is even: x f...
*October 2, 2013*

**Calculus, check my answers, please! 3**

Hmm... Okay! I see how that works now! :) Thank you so much! I'll be posting a few more problems and would appreciate if you could help with those, too!
*October 2, 2013*

**Calculus, check my answers, please! 3**

Did I get these practice questions right? 1. Suppose that f is an even function whose domain is the set of all real numbers. Then which of the following can we claim to be true? ***The function f has an inverse f –1 that is even. The function f has an inverse f –1, ...
*October 2, 2013*

**Calculus, check my answer, please! 2**

Consider the following functions: f(x)=sin(x^4-x^2) h(x)=(|x|-3)^3 g(x)=1n(|x|)+3 s(x)=sin^3(x) Which of the following is true? h and g are even, f and s are odd. f is even, h and s are odd. h and s are even, f is odd. ***f and h are even, s is odd. f, h, and s are odd.
*October 2, 2013*

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