# Posts by Sabrina

Total # Posts: 539

**Math short but tricky**

Solve log. 2 log (x-1)= log (x+1) the answer is 3 but i don't know how to get it...Any one hint or suggestion will be greatly appreciated :)

*January 5, 2011*

**pre algerbra**

When 4 times a number is subtracted from 7 times the number, the result is 33. Find the number.

*January 4, 2011*

**physic**

2. While throwing a football, you exert a forward force of 50.0 N on it and push it forward a distance of 1.2 m.

*December 23, 2010*

**Physics**

I know this is an old question, but I was just working through it myself and found the answer. So I will post it here for future people trying to solve this question. Nu_s = ma mg*u_s = ma Therefore, u_s = a/g = 2.80/9.8 u_s = 0.286 :)

*December 15, 2010*

**statistics**

Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...

*December 14, 2010*

**statistics**

. For the following exercise, complete the following: a. Find the mean, median, and range for each of the two data sets. b. Find the standard deviation using the rule of thumb for each of the data sets. c. Compare the two sets and describe what you discover. The following data...

*December 14, 2010*

**english 12**

they are but i am doing that for my summary and introductory elements. My teachers wants something creative like dancing singing stuff u know wat i mean

*December 14, 2010*

**english 12**

Hi, I am supposed to start my grade 12 ISU presentation but I am not sure what mini-creative part I should do. People are making posters,talking about their personal experience to the book. My book is "The power of one" by bryce Courtenay. I thought of getting the ...

*December 14, 2010*

**Math**

Add. 2z-2/3 + 3x+5/3

*December 13, 2010*

**writing process**

I don't know what you should do.

*November 30, 2010*

**English**

thank you soooo much ur a life saver :)

*November 24, 2010*

**English**

so i read the website does narrative mean only one theme and sequential mean more than one theme ...am i rightÉ

*November 24, 2010*

**English**

i understand and thank you :)

*November 24, 2010*

**English**

what is the difference between SEQUENTIAL POEMS and NARRATIVE POEMS ..please could you give explanation and not a website link thanks :)

*November 24, 2010*

**english**

how does the structure of the poem affect the meaning of the poem..or contribute to the poem THank u soo much :)

*November 24, 2010*

**english 12**

i have a poetry analysis tomorrow is there any websites that will help me also does anyone know how to figure out what exactly the imagery is in a poem..how can we make out it is an imagery , any examples..thank you A MILLION tyms

*November 24, 2010*

**Trig math**

how to split up using sum and difference identities cos (13pi/12) PLeaseeeeeeeeeee help!!! thanx a million

*November 17, 2010*

**Trig math**

PLEASEE HELPPMEEE!!!! cot2x+sec2x=tan2x+csc2x and 1+2sinxcosx/sinx+cosx=sinx + cosx

*November 9, 2010*

**trig. identities**

sin2x+sin2y=2sin(x+y)cos(x-y) Please helpp mee!! thank you sooo much really!!

*November 9, 2010*

**math**

you are right!

*November 7, 2010*

**physics**

A loaf of bread weighs 3.9 N on earth. What should it weigh, in newtons, on the moon, where the acceleration due to gravity is one-sixth that on Earth?

*November 7, 2010*

**math**

you are correct!

*November 7, 2010*

**math208**

x= 5/18

*November 7, 2010*

**gatsby ENGLISH HELP PLZZ!!**

what role does dan cody play in gatsby's development?? plz help the answer is 1 mark for my quiz but my teacher gave me only 1/2 a mark because i wrote "dan cody was the man who gatsby was with after he left home. gatsby worked for dan cody and that is where he made ...

*November 3, 2010*

**business**

why do currency increase and decrease in general? THank you so much!

*October 15, 2010*

**business**

comparing from a month ago, the us. currency has increased..so my question was why has it decreased?sorry if i wasn;t clear!

*October 15, 2010*

**business**

why has U.S. currency increased now? and euro currency decreased? PLEASE HELP ME I HAVE A TEST !!!

*October 15, 2010*

**math**

Find the range, median, and mode of each set of data and write the question along with the answers in your Math notebook and submit on 13,October 2010. A. 20, 12, 6, 17, 4, and 19 B. 13, 2, 17, 18, and 5 C. 16, 16, 4, 4, 23, 21, and 21 D. 13, 14, 15, 14, and 9

*October 15, 2010*

**science**

on a worksheet i have i found out the volume of the rectangle (34.2cm3) then it asks "If a block of H20 the mass would be..." i put 34.2g since that was the volume but not sure if im right?

*October 13, 2010*

**Algebra 1**

1/4 x (7+3g)= - g/8 please help

*October 11, 2010*

**English**

in what way does Tom buchanan from chapter 1 and 2 of "the great gatsby" show moral and spiritual decline of the upper class??

*October 10, 2010*

**High School**

Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. Then, highlight the nouns modified by your adjectives in yellow and the verb, ...

*October 10, 2010*

**math**

how to factor 9x8-745x4+1296 by 9x4-16?? Thankyou!!

*October 6, 2010*

**math**

I SOLVED THE ANSWER!THANK YOU ANYWEYS!

*October 6, 2010*

**math**

thank you so much reny! but i was wonndering how can you factor x8-2x6+x5+x4-x3+x+1 by x3+1 THANK YOU SOOO MUCH!

*October 6, 2010*

**Math**

thank you so much! also for x3+1 what is the factor?? is it isquareroot1

*October 6, 2010*

**Math**

hi guys! I was wondering how to do x6-18x2+8 divided by factor x2-4 I normally use synethetic division what else easier method should i use?

*October 6, 2010*

**Microeconomics**

I am stuck trying to illustrate poverty in an Edgeworth box. How do I begin thinking about this problem?

*October 4, 2010*

**celle energy**

do anyone have an acrostic poem for cell energy

*October 4, 2010*

**business**

who started the Hudson's bay company? what is the history of HBC? thANK YOU SO MUCH!!

*September 28, 2010*

**business**

What is the most significant Manufacturing Industries in Canada?

*September 28, 2010*

**Pre-Calc/Trig**

-Equation 1: 4x+y=120 --> y = 120 - 4x -Equation 2: x^2(y)=Volume -Combine equations: x^2(120-4x) = volume -Distribute: -4x^3 + 120x^2 Those are the initial steps

*September 26, 2010*

**Math I really need help!**

Multiply and simplify by factoring. Assumem that all expressions under radicals represent nonnegative numbers. ∛(y^13) ∛(16y^14) ∛y^13 x 16y^14 ∛16y^27 Am I even close here?

*September 25, 2010*

**Please help! MATH**

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

*September 25, 2010*

**Math clarification Reiny**

This is the problem you helped me with. I was curious, do I write the solution set as (1 + i3ã3)/2, (1-i3ã3)/2 change it to the standard form first x^2 - x + 7 = 0 a=1, b=-1, c = 7 x = (1 } ã(1 - 4(1)(7))/2 = (1 } &...

*September 25, 2010*

**Math Division of polynomials?**

Divide and simplify (3y-6)/14÷(y-2)/4y I think I am supposed to multiply both sides by 4y. Help.

*September 25, 2010*

**Math over it!!!!**

Multiply (a+p)(a^2-ap+p^2) Am I supposed to line these up then multiply a^2-ap+p^2 by p then by a?

*September 25, 2010*

**Math anxiety!!!**

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

*September 25, 2010*

**Math Reiny?**

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) I got ∛16y^27 Am I right?

*September 25, 2010*

**Math impatient now**

Once again you have come to my rescue. Thank you Reiny.

*September 25, 2010*

**Math impatient now**

Subtract simplify if possible. 5-v/v-8 - 9v-7/8-v I can't do this no matter how I try i cannot figure out what the lcd is. I don't see where either denominator can be factored. WHat am I doing wrong?

*September 25, 2010*

**Math, I have partial answer..**

The line of symmetry is x = h. So going on your answer of (4,22), x=4 y=22 h=4 k=22

*September 24, 2010*

**Math I have tried it and tried it**

Thanks Reiny

*September 24, 2010*

**Math I have tried it and tried it**

Okay I think I have this: vertex: x=1/2 y=17/2 equation of line of symmetry: x=1/2 Maximum value of f(x)=17/2 Am I correct?

*September 24, 2010*

**Math I have tried it and tried it**

I have tried several times to find the vertex, line of symmetry, max/min value of the quadratic function. f(x)=-2x+2x+8 I know I have to do completing the square to answer this but everytime i try to follow the steps I stumble hard! a(x-h)^2+k x= -b/2a x=-2/2(2)=-2/4=-1/2 x+-1...

*September 24, 2010*

**English**

is Polonius a good advisor to the king in Hamlet? please help me, its for a essay, your help is greatly appreciated. THank you!!

*September 24, 2010*

**Math Reiny question**

This is the problem you helped me with. I was curious, do I write the solution set as (1 + i3ã3)/2, (1-i3ã3)/2 change it to the standard form first x^2 - x + 7 = 0 a=1, b=-1, c = 7 x = (1 } ã(1 - 4(1)(7))/2 = (1 } &...

*September 24, 2010*

**Math Uugghhh**

Okay the problem says I have to multiply (-2t)^2(3t^7)^2 SO what am I supposed to do, add the exponents then multiply -2t by 3t? Geez this is so confusing. If I square everything inside the first parentheses by 2 I get (4t^2) the second parentheses would be ( (9t^9) ? then it ...

*September 24, 2010*

**Math HELP!!!!!!!!**

I could really use help with this problem.

*September 24, 2010*

**Math**

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

*September 24, 2010*

**Math**

Find the following. Assume the variables can represent any real number. ã((a+7)^2 ) When I tried to do this I got completely lost. ã((a+7)^2 )=„ a+7„ I'm not doing this right am I?

*September 24, 2010*

**Math SCREAMING for HELP**

Okay so do I write the answer as the solution set is:(1 } 3ã3 i)/2 , 0

*September 24, 2010*

**Math SCREAMING for HELP**

Use the quadratic formula to slove the equation. x^2-x=-7 This is what I have got so far and I do not think this is right: x=1(-1)±√-1^2-4(1)(7)/2(1) x=1±√1-4(7)/2 x=1±√-21/2 x=1±-21/2 and here I am lost! Use rational exponents to ...

*September 24, 2010*

**Math Reiny**

Thank you Lynette. I figured I was missing something.

*September 24, 2010*

**Math Reiny**

AmI doing this right? Multiply (a+1/2)(a+1/3) a^2+1/6

*September 24, 2010*

**Math**

Thank you Reiny

*September 24, 2010*

**Math**

The problem to solve is: (x+20)(x-12)(x+4)>0 but I can't figure out how to do this right so I left off the >0 and tried to solve the equation. x+20 evaluates to x+20 x-12 evaluates to x-12 Multiplying x+20 by x-12 is a classic Algebra problem. Here, you are trying to...

*September 24, 2010*

**Math HELP!**

THANKS!!!!!! Just one question, when I follow these steps and get to the result is it both 2c/(c-1), c‚ 10 or am I reading my problem wrong and the answer is just c‚ 10

*September 24, 2010*

**Math HELP!**

Thank you Reiny so much for you help. Can you tell me if I am on the right track with this problem: 4c^2/4c^2-8c+4 x 4c-4/2c When solving this am I supposed to find the gcf or lcm to solve> would the lcm be 2 and the gcf be 16? I don't know if I am even going down the ...

*September 24, 2010*

**Math HELP!**

I posted a few questions and then went back and posted how I thought they were supposed to be answered. Could someone please locate my earlier questions and tell me if I am on the right track?

*September 24, 2010*

**Math**

Geez. Thank you so much.

*September 24, 2010*

**Math**

I cannot figure this out! I know that the top is essentially the same as the bottom. SO what do I do? (r^2-64)/(r+8)^2= (r^2-64)/(r^2+64)= 0 ?

*September 24, 2010*

**Math**

Simplify by removing factors of 1. (r^2-64)/(r+8)^2

*September 24, 2010*

**Math**

yes I do now. I don't know why I am having such a hard time. Thank you so much! Now I can do my other problems.

*September 24, 2010*

**Math**

ANd the radical sign keeps going away when I try to post this. It is supposed to be: (5 radical sign 5 - 15 radical sign 7)x (3 radical sign 5 + 9 radical sign 7) Am I supposed to use th edistributive law? I am so confused.

*September 24, 2010*

**Math**

Multiply (5ã5 - 15ã7)(3ã5 +9ã7)

*September 24, 2010*

**Math**

Solve 6x^4-19x^2+10=0 I got x=-0.816496581, 0.816496581 x=-1.58113883, 1.58113883 Is this correct? It just doesn't seem right to me.

*September 24, 2010*

**Math**

Actually I kept t hinking the first two cancelled each other out because one was positive and the other negative. That's why I have been having such a hard time with this one. Thanks so much for your help.

*September 24, 2010*

**Math**

`Perform the indicated operations and simplify. (z-1)/(z-8)-(z+1)/(z+8)+(z-120)/(z^2-64)

*September 24, 2010*

**Math**

Perform the indicated operations and simplify. (z-1)/(z-8)-(z+1)/(z+8)+(z-120)/(z^2-64) Solve (x+20)(x-12)(x+4)>0

*September 23, 2010*

**math**

Suppose you copy a drawing of a polygon with the given size factor. How will the side lengths, angle mesures , and perimeter of the image compare to those of the original? a. 200% b.150% c.50% d.75%

*September 20, 2010*

**Math 117**

x^2=3y (x-0)^2=3(y-0) vertex is (0,0) line of symmetry is x=0 Graph: the parabola opens upwards and meets at the point (0,0)

*September 19, 2010*

**Math 117**

Find and label the vertex and the line of symmetry. Graph the function. f(x)=1/3x^2

*September 19, 2010*

**Math 117**

Find the vertex, line of symmetry, and the max/min value of f(x). Graph the function. f(x)=-3(x+1)^2+3

*September 19, 2010*

**math**

I'm using 'x' instead of '+' to make the answer less confusing. The cost for the phone is $30, and that's a one time charge. The cost for x months would be 20 times x, or 20x So, the model for the total cost is C(x) = 30 + 20x. x= 30 + 20(1)= 50 x= 30...

*September 19, 2010*

**Math 117**

The width of a rectangle is 1 ft. less than the length. The area is 12ft.^2. Find the length and width.

*September 19, 2010*

**Math 117**

Give exact and approximate solutions to three decimal places. y^2-6y+9=25 x^2+5x-7=0

*September 19, 2010*

**Math 117**

Give exact and approximate solutions to three decimal places. (x-8)^2=49 I need step by step example on how to solve this AND input it into a calculator. Please!

*September 19, 2010*

**college**

thank you for all your help! i will post my feed back.

*September 18, 2010*

**college**

basically I have read both essasys now I'm not sure how to format it correctly. I will try to explain it simple on what i have. I went through paragraph by paragraph i jogged down one author \ said and to a piece of what the other author said and compared it. For instance...

*September 18, 2010*

**college**

she says i need to paraphrase the too essays usins transitional phrases show how one essay either illustrates or refuses the other. i should also have a brief conclusion that suggests my stance by showing preferences to one of the two arguments. My synthesis should be 2 ...

*September 18, 2010*

**college**

my instuctor printed them offline i been trying to compare betwwen the 2 essay one is for helping the poor and the other is against it

*September 18, 2010*

**college**

I need to site from two essay one is the Famine,affluence,and morality(pete singer) and the other is Garrett hardin the Lifeboat. I have read both essay.Now I need to cite from them and put in apa format can some please help me

*September 18, 2010*

**Med insurance billing**

A patient presented for evaluation after a fainting spell. The following tests were ordered by the physician: carbon dioxide, chloride, potassium, and sodium. The health-care claim that was submitted contained procedure codes for each test. You have not received any payment on...

*September 12, 2010*

**Geography**

If D is the midpoint of AC and C is the midpoint of AB and AD=3cm what is the length of AB

*September 9, 2010*

**5th Grade Math**

Because in the second set of parenthesis there is an actual black line printed on the page on both sides of the multiplication sign. He must put an answer on both black lines. The instructions say to fill in the missing values (not value).

*September 7, 2010*

**5th Grade Math**

Thanks for your help but I'm afraid I didn't make the question clear. This is actually asking for two answers. The x is simply a multiplication symbol and we need a missing value times a missing value. Their is an actual blank to be filled in on either side of the ...

*September 7, 2010*

**5th Grade Math**

0.38 = (3 X 0.1) + ( X ) My sons paper instructs us to fill in the missing values. We understand that we are to fill in the two values in the second set of parenthesis, but that is all we understand. Please help...I feel so inadequate because I can't help my child with ...

*September 7, 2010*

**Math**

Thank You

*September 7, 2010*

**Math**

0.38 = (3X0.1) + ( X ) My sons paper instructs us to fill in the missing values. We understand that we are to fill in the two values in the second set of parenthesis, but that is all we understand.

*September 7, 2010*