Tuesday

August 4, 2015

August 4, 2015

Total # Posts: 1,261

**Algebra**

Suppose f is a polynomial such that f(0)=47, f(1)=32, f(2)=-13, and f(3)=16. What is the sum of the coefficients of f?
*July 28, 2015*

**math**

How do you find the area and perimeter of your room floor?
*July 28, 2015*

**kempston**

i spent 1/4 of my money in one shop and 1/3 of my money in another shop. what fraction was left?
*July 21, 2015*

**Organic Chemistry**

Consider the weak organic base n-propylamine. The Kb value for this base is 1.3-10^-5, and its pKa is 10.6. At what pH are the "proton on" and "proton off" forms present in equal concentrations? At what pH values would the "proton on" form have ...
*July 19, 2015*

**Math**

Tiffany is constructing a fence around a rectangular tennis court. She must use 300 feet of fencing. The fence must enclose all four sides of the court. Regulation states that the length of the fence enclosure must be at least 80 feet and the width must be at least 40 feet. ...
*July 2, 2015*

**Math**

The area itself consist of length x width. The formula for a rectangular prism is length x width x height . So , the question already give you all the hints and you just have to multiply all of them ; 25 x 10 = 250
*June 24, 2015*

**Chemistry**

Electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. So the number of electron must be 15 , right ? But , what if m = 1 ? Does it effect the number of electron ?
*June 23, 2015*

**math**

What number is the sum of 8 numbers whose average is 13
*May 31, 2015*

**Math**

Finish the following to make a perfect square. 1.) x^2+sqrt3x+______ 2.) x^2+4x+_____
*May 19, 2015*

**Math**

A Voting Poll: Candidate A: 30% Candidate B: 50% Undecided: 20% The Table above summarizes the results of an election poll in which 4000 voters participated. In the actual election, all 4000 of these people voted and those people who chose a candidate in the poll voted for ...
*May 18, 2015*

**Math**

Ok, or I could find the slope correct? Thank you!
*May 18, 2015*

**lanugage**

that wasn't my intention. um sorry
*May 14, 2015*

**lanugage **

what is the prepositional phrase in the sentence? The family drove to the store. a. the family drove b. drove to the store c. the family d. to the store a?
*May 14, 2015*

**Social Studies**

Okay thank you
*May 13, 2015*

**Social Studies**

what is the problem with arabia and iraqs dependency on oil?
*May 13, 2015*

**ss**

why was the migration of the Aryans to India significant
*May 13, 2015*

**Social Studies**

Farmers in the northern Indo-Gangetic plain of south Asia rely mostly on: A. Water carried by rivers that drain from the Himalayas B. Cool air that brings drenching rain C. Monsoons that bring needed moisture D. Desert wind that balances the cold moist air from the Himalayas A?
*May 13, 2015*

**Math**

How would you factor (x+y)^2-(x-y)^2
*May 12, 2015*

**analytical chemistry**

In generating the synchronous spectrum, it is not necessary to specify the wavelength range, why?
*May 12, 2015*

**Science**

How do two tissue types work together to improve organ function
*May 7, 2015*

**Social Studies**

What are the causes of the water pollution that threaten South Asia today? overpopulation, growing cities, damming of rivers, and the need for more irrigation burning down of forests, building of new factories, and more cars the use of major rivers in religious festivals ...
*May 6, 2015*

**Math **

How do you find the quadratic equation, in standard form, that has the roots x= (2±√5)/3
*May 5, 2015*

**Math**

Apply the following transformations to this parabola. Y=2(x+3)^2-1 A) reflection in the x-axis, followed by a translation 5 units down. I got : y = -2(x+3)^2-6 But the answer is y= -2(x+3)^2-4 Why is it -4 And also. How odd you do reflections in the y axis without drawing the ...
*May 5, 2015*

**Math**

Determine one of the zeros of the quadratic realtion: y=(x-(k/2))^2-[(k-2)^2/4] I tried to do this by expanding and got to y=x^2-mx-k+1 How are you suppose to do this
*May 5, 2015*

**Math**

A tangent is a line that touches a circle at exactly one point. For what values of k will the line y= x+k be tangent to the circle x^2+ y^2 = 25? I know I'm suppose to use the properties of a discrimminate. But how
*May 4, 2015*

**Math**

in the relation y=4x^2+24x-5, for which values of y will the corresponding equation have no solutions The answer is y<-41. But I got that y>656 by using d=b^2-4ac
*May 4, 2015*

**Math**

The equation x^2 + k = 6 x has two distinct real roots. Find the range of values of k. I know that you do 36 -4k > 0 -4k > -36 k < 9 But I don't get why you switch the signs. So. When do u switch signs
*May 4, 2015*

**Socials**

With your descriptions, yes the Canadian government was very similar to American governments.But how do they negotiate?
*May 4, 2015*

**Socials**

I am writing an essay for socials and the topic is: To what extent was the treatment of First Nations by the Canadian government justified? So far, I plan to explain both sides but lean more to the unjustified side(2 body paragraphs on that). My points are: the treaties and ...
*May 4, 2015*

**education**

Just want to know what these questions are asking for. thanks What view do you have of the children's skills and competencies? In what ways do you need to transform your view of children to see them in a more positive light? what skills do you want to strengthen in ...
*April 25, 2015*

**math**

In quadrilateral QRTS, we have QR = 11, QS = 9, and ST=2. Sides line RQ and line ST are extended past Q and S, respectively, to meet at point P. If PS = 8 and PQ = 5, then what is RT?
*March 29, 2015*

**I need help with this ALGEBRA**

Yes you were! Good job! Glad I could help. :)
*March 17, 2015*

**I need help with this ALGEBRA**

v=20√(273+t) 329 = 20*sqrt(273+t) 16.45 = sqrt(273+t) 273+t = 16.45^2 t- 16.45^2-273 t = -2.4 degrees celsius Hope that helps? :)
*March 17, 2015*

**Science**

Glad I could help! :)
*March 17, 2015*

**Science**

I don't think C is right. D. is the correct answer.
*March 17, 2015*

**Algebra**

1. Solve log(4/x) (x^2 - 6) = 2. (note: the (4/x) is underscored) 2. Show that loga [(x + {sqrtx^2-5}) / 5] = -loga (x - (sqrtx^2-5))
*March 15, 2015*

**Algebra**

1. Solve: log (y-1) = -log(y-9) 2. Find the inverse of the logarithmic function f defined by f(y)= 2log5 (2y-8)+3.
*March 14, 2015*

**Math**

1. Solve: log (y-1) = -log(y-9) 2. Find the inverse of the logarithmic function f defined by f(y)= 2log5 (2y-8)+3.
*March 14, 2015*

**Math**

Thank you very much. Very clear explanation.:)
*March 13, 2015*

**Math**

1. Solve for y in the equation 15 * 3^(y+1) - 243 * 5^(y-2) = 0. 2. Solve: log y-1 = -log(y-9)
*March 13, 2015*

**Math**

1. Find the inverse of the logarithmic function f defined by f(y) = 2 log5 (2y-8) + 3. 2. If x > y > 1, what is the largest possible value of logx (x/y) + logy (y/x)?
*March 13, 2015*

**Math**

1. The sequence log2 32, log2 y, log2 128, ... forms an arithmetic sequence. What is the value of y? 2. If log a^2 b^3 = x and log (a/b) = y, what are the values of log a and log b?
*March 13, 2015*

**Math**

1. Find all values of p so that 6p, 4p-1, p^2 - 1 will be an arithmetic sequence. 2. The common ration of a geometric sequence is -3. IF the terms of this sequence are 3y, y+6, z+1, ..... respectively, what is the value of z?
*March 13, 2015*

**Chemistry**

A chemist reacts 112 g of iron with 72 g of water. State which reactant is the limiting reagent. Calculate what is the maximum yield in grams of Fe3O4 that could be produced in this reaction. For the substance that is not the limiting reagent, calculate the amount in excess.
*March 12, 2015*

**Health**

1:According to MyPlate which two food groups should you consume in the largest amounts? A:Fruits And Grains B:Grains and Protein C:Protein and Veggies D:Veggies and Grains
*March 6, 2015*

**Geometry**

1. If triangles EIO = UAN, EI = 3x-4, IO = 2x+5, UA = 2x+3 and UN = 3x+1, solve for the value of x, find the perimeter of triangle UAN and identify the smallest angle in triangle EIO. 2. If triangle FAT is equal to triangle GRC, FA = 24cm and the ratio of GR, RC and GC is 2:1:...
*March 4, 2015*

**Algebra**

True or False and please explain so that I can understand. Thank you. 1. (1,0) is always a point on the graphy of y = logb (x). 2. If x=b^2y for b > 1, then y = 1/2 logb (x).
*March 4, 2015*

**math**

There are 6,975 folders if 1,735 folders were handed out . How many will I have left? 6,975- 1,735=
*February 25, 2015*

**math**

11/21 or 9/17. which one is greater and what is the work/common denominaters
*February 24, 2015*

**Socials**

oh and how much does elizabeth get paid for her jobs? Like 1 pound a week? or..
*February 24, 2015*

**Socials**

Also, how much would ship tickets cost? How would this family "pay" for them?
*February 24, 2015*

**Socials**

Oh nice! Thank you so much Reed, I really appreciate your help. I am reading the links right now! I guess since land grants were discontinued in 1827 my character would immigrate before this date?
*February 24, 2015*

**Socials**

A few days ago I posted a question about an immigration diary during the great migration period(I will link it in a comment below) in which Ms Sue and Reed replied with some tips- thank you. I am starting to write some of the diary and I still have a few questions that I have ...
*February 24, 2015*

**algebra**

A package of modeling clay was shaped like a cone with a radius of 25 cm and a height of 7.2 cm. Miriam used all the clay to make a cylinder with a radius of 15 cm. What was the height of the cylinder? Express the answer to one decimal place and use 3.14 to approximate pi. cm
*February 23, 2015*

**algebra**

A package of modeling clay was shaped like a cone with a radius of 25 cm and a height of 7.2 cm. Miriam used all the clay to make a cylinder with a radius of 15 cm. What was the height of the cylinder? Express the answer to one decimal place and use 3.14 to approximate pi. cm
*February 23, 2015*

**Socials**

Oh but my expectation vs reality question wasn't answered! Were they really shocked when they got there and why were they shocked? Any other factors other than eavily forested areas?
*February 20, 2015*

**Socials**

O wow! Thank you all so much, great suggestions!! And yes Reed I actually picked Liverpool too so yay!
*February 20, 2015*

**Socials**

Note: My questions are below mostly in brackets and at the very end! I have to do an immigration diary assignment and I am to portray a young 12 year old girl(any English name suggestions?) from a city in England(what is a realistic city during that time?) who is migrating to ...
*February 20, 2015*

**Math**

How do you find the component form AND the magnitude of the vector v with initial point (1, 11) and terminal point (9, 3)?
*February 18, 2015*

**Math Check**

Oh yeah, I'm sorry about that. It is suppose to be d^2; I made a typo error. So would you say that #1 and #2 are done right?
*February 13, 2015*

**Math Check**

Oh and this a worksheet. It's called "Pod Racing" and it's on Google if you need to see it up close. :)
*February 13, 2015*

**Math Check**

I need someone to please check this for me. Thanks! :) Question: Tonto Pagalies (brother to vaporized racer Teento), an observer at Bindy Bend, is 14285’ from Desert Plain. He knows that there is a right angle between the lines of sight from Bindy Bend to Desert Plain and...
*February 13, 2015*

**Math**

If x and y are positive integers such that x^2+y^2=13 and x>y, what is the value of x-y?
*February 10, 2015*

**Math**

Wait how do you get that first part?
*February 10, 2015*

**Math Question**

Hello! I need help with this question. I have an answer but I wanted to make sure it's correct. Thanks! Question: Which of the following is NOT a trigonometric identity? Answers Given: A.) 1-cos^2x=sin^2x B.) sin^2x+1=cos^2x C.) 1+cot^2x=csc^2x D.) sec^2x-1=tan^2x My ...
*February 9, 2015*

**Percentages ques 2**

Thank you! But does this have anything to do with ratios?
*February 9, 2015*

**Percentages ques 2**

car A costs 20 percent less than car B. Car B costs twice as much as Car C. The cost of Car C is what percent of the cost of Car A? How do I set up this question? What should the process of thinking be for these questions?
*February 9, 2015*

**Percentages**

A team has won 60 percent of the games it has played so far. If the team wins the 15 remaining games in the season, it will have won 80 percent of the season's games. How many games will the team play over the entire season?
*February 9, 2015*

**Science - chemistry**

Hi Im in year 7 and to get a level 6 we have to explain the big idea of energy. Our project is about the reation of iron and sulphur to make iron sulphide. We have been told to explain using the big idea of energy. pls help me asap!!!!
*February 5, 2015*

**math**

where the parentheses in 4=3-1+4/2
*February 3, 2015*

**math**

[4/1]
*February 3, 2015*

**math**

where are the parentheses in 3 times 2 minus 4 divided by 1
*February 3, 2015*

**chemistry(limiting reagent)**

Al2(SO3)3 + 6NaOH ----> 3Na2SO3 = 2 Al9OH)3 If 10.0g of Al2(SO3)3 is reacted with 10.0g of NaOH, determine the limiting reagent? help!!!
*January 27, 2015*

**math **

does anyone know how could you use an area model to identify the binomial factors of a trinomial? explain
*January 25, 2015*

**Math-polynomials**

1/2n^2 - 3/2n factorization, i got : n/2 (n-3) am i right or wrong?
*January 22, 2015*

**math (factors and products)**

does anyone know how could you use an area model to identify the binomial factors of a trinomial? explain
*January 22, 2015*

**Calculus**

A balloon is rising at a constant speed of 5 ft/sec. A boy is cycling along a straight road at a constant speed of 15 ft/sec. When he passes under the balloon, it is 5 feet above him. Determine how fast the distance between the boy and the balloon is increasing 3 seconds after...
*January 14, 2015*

**science Help **

How did the discovery of the electron change the atomic model? A.it disaproved the earlier idea of an indivisible atom. B.it confirm that atom are very tiny. C. It exposed fraudulent experiments conducted by unqualified scientists. D. It proved that atom are easier to see than...
*January 14, 2015*

**math**

the number line below shows an estimate for the sum of 6/13 and 1/8. explain why the sum is greater than 1/2.
*January 11, 2015*

**language art**

B
*January 9, 2015*

**language art**

Maybe d.
*January 9, 2015*

**language art **

In all together now Jordan states that there were marches and protest against segregation and discrimination in the 1960s. What make this statement a fact? A.it was stated In persuasive essay b. It is an emotional statement. C.it can be proven in an encyclopedia. D.it reveal ...
*January 9, 2015*

**computer and technology**

b and d. Not sure. I no its not c
*January 8, 2015*

**computer and technology**

I think is b and c
*January 8, 2015*

**computer and technology**

I think is c
*January 8, 2015*

**computer and technology**

A.d. I'm not sure if its right
*January 8, 2015*

**computer and technology**

It is important to verify internet source because. ----- choose that apply. A.the source should be written by real author. B.anyone can create a website and write false or inaccurate information on it c.you need to make sure it is owened by a government agency. D.websites can ...
*January 8, 2015*

**adding and subtracting rational**

15/16-3/4=
*January 7, 2015*

**adding and subtracting rational**

11/15+1/8=
*January 7, 2015*

**adding and subtracting rational**

-10 11/12-7 1/4=
*January 7, 2015*

**adding and subtracting rational**

5/6+4/9=
*January 7, 2015*

**exponents ,factor,fraction**

Yes
*January 5, 2015*

**exponents ,factor,fraction**

The glee club has a set of 48 classical CD and a set of 42 show tune CD. Each set can be divided equally among the club member.what is the greatest possible number of club member. A.12. B.3. C.6. D.336
*January 5, 2015*

**exponents ,factor,fraction**

(X-b)^2+a^2for a=2,b=1,and c=7
*January 5, 2015*

**exponents ,factor,fraction**

7•7•7= 7^3. Or 3^7 Or 21 or 7^4
*January 5, 2015*

**equation and inequalities**

Graph the solution of the equation b-15=-12
*December 30, 2014*

**equation and inequalities**

Write a word phrase for 5 p
*December 30, 2014*

**subtraction rational number**

-11 1/8+15 5/12=
*December 30, 2014*

**chemistry**

What is the solubility of calcium fluoride in a buffer solution containing 0.45 M formic acid and 0.20 M sodium formate? Given: Ka for formic acid = 1.7 x 10-4 Ka for hydrofluoric acid = 6.8 x 10-4 Ksp for calcium fluoride = 3.4 x 10-11
*December 3, 2014*