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December 20, 2014

Posts by shawn


Total # Posts: 486

Math Algebra help
Solve w= (va)/(r^2+a^2) for a. is the answer a= sqrt[w(r^2+v^2)/v]?
November 9, 2008

Math Algebra check
Which of the following quadratic equations has -4 and 3/4 as the solutions? a.)x^2+(13/4x)-3 b.)x^2+(30/7x)-(25/7) c.)x^2+(30/7x)+(25/7) d.)x^2-(13/4x)+3 I substituted the values and I have the answer as (a.)
November 9, 2008

Math help
Which of the following quadratic equations has -4 and 3/4 as the solutions? a.)x^2+(13/4x)-3 b.)x^2+(30/7x)-(25/7) c.)x^2+(30/7x)+(25/7) d.)x^2-(13/4x)+3 I substituted the values and I have the answer as (a.)
November 9, 2008

Math help update Thanks
Thanks
November 9, 2008

Math help update
let f(x) = 12x^2 +7x-10. Find x such that f(x)=0 a.) -4/5, 5/3 b.) -5/4, 2/3 c.) -2/5, 5/3 d.) -5/3, 2/3 I think I have it. I was able to factor out 12x^2 +7x-10 to (4x+5) (3x-2)=0 The answer is -5/4 and 2/3 right?
November 9, 2008

Math answer check
Determine the type of number that the solutions of x^2 +5x+3=0 will be I have the answer as rational is that right?
November 9, 2008

Math help 2 answers
I think I have it I was able to factor out 12x^2 +7x-10 to (4x+5) (3x-2)=0 answer is -5/4 and 2/3 right?
November 9, 2008

Math help 2
let f(x) = 12x^2 +7x-10. Find x such that f(x)=0 a.) -4/5, 5/3 b.) -5/4, 2/3 c.) -2/5, 5/3 d.) -5/3, 2/3
November 9, 2008

Math help 2 update
Thanks just to make sure I have the problem as x^2+8x less than or equal to 9.
November 9, 2008

Math help 2
Solve: x^2 +8x </=9. How would I solve this?
November 9, 2008

Math help Thanks
Thank you so much
November 9, 2008

Math help
Solve: x^2 +5x=1. Use a calculator to approxiamte the solutions with rational numbers. is the answer -0.1925824, 5.65331193 ?
November 9, 2008

Math check
Complete the square: x^2 -12x. Which of the following is the correct perfect-square trinomial? the answers are: a.) x^2 +22x+121 b.) x^2 -10x+25 c.) x^2 -20x+44 d.) x^2 -12x+36 This is tough because the answers could be a.) b.) and d.) I am not sure which to choose.
November 9, 2008

word problem 3 thanks
I forgot to move the decimal one more place.
November 9, 2008

word problem 3
Rosie's Palm Pirates, a manufacturer of electronic organizers, estimates that when x hundred Palm Pirates are made, the average cost per unit is given by C(x) = 0.4x^2 -3.68x+9.524, where C is in hundreds of dollars. What is the minimum cost per unit? is the answer $ 10.60
November 9, 2008

Math help
What is the y-intercept of f(x)=x^2+x-12? the answers are a.)(0,12) b.)(-72,0) c.)(0,-12) d.)(0,-72) I have the answer as (c.)(0,-12) is this right?
November 9, 2008

Algebra y-intercept
What is the y-intercept of f(x)=x^2+x-12? the answers are a.)(0,12) b.)(-72,0) c.)(0,-12) d.)(0,-72) I have the answer as (c.)(0,-12) is this right?
November 9, 2008

Math question thanks
thanks so much
November 9, 2008

Math question
Solve: x^-2 - x^-1= 5/4 I multiplied all terms of your equation by 4x^2 to get 5x^2 + 4x - 4 = 0 I get (-2+/-2sqrt6)/5 is this correct?
November 9, 2008

Math word problem 2
You are really good. Thanks. I really appreciate the breakdown of the problem.
November 9, 2008

Math word problem 2
Sabine and Hercule can assemble a table in 45 minutes. Working alone, it takes Hercule 48 minutes longer than Sabine to put this table together. How long would it take for Sabine to assemble the table by herself? What formula would I use to solve this?
November 9, 2008

Math word problem check
oh okay thanks.
November 9, 2008

Math word problem check
The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem? I used the formula of V = D/T T = D/V, you know that 78.2...
November 9, 2008

Math question
I tried the equation and got (-2 }2ã6)/5 Is this the answer?
November 9, 2008

Math
Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?
November 9, 2008

Math word problem
Is the answer 10 km/h?
November 9, 2008

Math word problem
The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem?
November 9, 2008

Math Check
Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?
November 9, 2008

Algebra help
Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?
November 9, 2008

Math question
Thanks I understand now.
November 9, 2008

Math question
Solve: x^2 +4x+1=0 Is the answer 2+-sqrt2?
November 9, 2008

Math help
Thanks
November 9, 2008

Math help
Solve: x+5=x^2 I have (1+- sqrt 21)/2 Is that right or did I calculate something wrong?
November 9, 2008

Algebra
Solve: x^2 +4x+1=0 Is the answer 2+-sqrt2?
November 9, 2008

Algebra
Thanks
November 8, 2008

Algebra
Solve: 5x(x-5)-2x(x+4)=-90 Is the answer 5,6 ?
November 8, 2008

Math check
Solve: 3x^2-11=0 Is the answer" +- sqrt 11/3?
November 8, 2008

Math Algebra check
Solve: 3x^2-11=0 Is the answer" +- sqrt11/3?
November 8, 2008

geography
sorry i meant titusville PA and i got it but thanks
October 30, 2008

geography
what happened in titusville in 1559
October 30, 2008

Georgia Studies
the union was not for slavery and they had more factories, a bigger population, and just a better trained army
October 30, 2008

reading
What does a magician do when he walks to the edge of a cliff?
October 28, 2008

math check
Simplify: sqrt(x^5 y^2)+sqrt(9xy^2) is the answer sqrtx(x^2y+3y)
October 27, 2008

Math check
multiply: sqrt-25 sqrt-100 is the answer 50?
October 27, 2008

word problem
oh okay, I see what I did wrong sorry. Thank you
October 27, 2008

word problem
A disoriented driver crosses diagonally from one corner of a 150 m by 275 m lawn to the far corner. How far does the wayward driver drive across the lawn? Give an approximate answer to three decimal places. What formula would I apply to solve this? Responses Math word problem...
October 27, 2008

Math check
if you had to chose would it be the + or - or just select both?
October 27, 2008

Math check
express in terms of i and simplify: srqt-54 is it -3isqrt6?
October 27, 2008

math check
subtract: 3+5i-(-4+6i) is the answer 7-i?
October 27, 2008

Math word problem
And how would I do that?
October 27, 2008

Math word problem
A disoriented driver crosses diagonally from one corner of a 150 m by 275 m lawn to the far corner. How far does the wayward driver drive across the lawn? Give an approximate answer to three decimal places. What formula would I apply to solve this?
October 27, 2008

Math check
correct the -2 is on the outside of the square root symbol.
October 27, 2008

Math check
The problem is solve x= sqrt10x-4-2 So it would be x=sqrt10x-6 right I have as x=4 is that right? or is it 2,4
October 27, 2008

Math check
I have the answer as x=4 is that right?
October 27, 2008

Math check
The problem is solve x= sqrt10x-4-2 So it would be x=sqrt10x-6 right then how would I solve for x
October 27, 2008

math check
Thanks
October 27, 2008

math check
if f(x)=x^2 find f(2-sqrt6) I have the answer as 10-4sqrt6 is that right?
October 27, 2008

Math
sqrt (x^5 y^2) +sqrt(9xy^2)
October 27, 2008

MAth
^5 sqrt symbol a^6/ ^4 sqrt symbol a^3
October 27, 2008

MAth
(3+sqrt x)(4- 3 sqrt x)
October 27, 2008

Math
Simplify: 9 sqrt5 -3 sqrt5
October 27, 2008

Math
^4sqrt symbol(x^2 y^3)^3sqrt symbol(xy)
October 27, 2008

MAth algebra
Simplify ^5 sqrt symbol(x^6y^5)/^5 sqrt symbol(x^2 y^2)
October 27, 2008

Math
The problem is solve x= sqrt10x-4-2
October 27, 2008

Math
Solve: x= sqrt(10x-4-2)
October 27, 2008

Math
rationalize the denominator sqrt 5/ (5+sqrt6)
October 27, 2008

Math
I have the answer as 10-4sqrt6 is that right?
October 27, 2008

Math
if f(x)=x^2 find f(2-sqrt6)
October 27, 2008

math
if f(x) = sqrt(9-3x) determine the domain of f
October 27, 2008

MAth
Express using exponential notation sqrt (6xy)^3
October 27, 2008

Math
Express using radical notation : (6ab)^4/3
October 27, 2008

Math
Simplify: (4+2i)/2i(4-2i)^-1
October 27, 2008

Math
Solve: sqrt(7x-5)+sqrt(15x+4)=sqrt(30x+31)
October 27, 2008

Math
Divide and simplify to the form a+bi. (-8+i)/(2-3i)
October 27, 2008

Math
Multiply Write the answer in the form a+bi. (2-3i)^2 I am coming up with 4-3i what am I doing wrong?
October 27, 2008

Math
Multiply: sqrt-25 sqrt-100 is it 50?
October 27, 2008

Math check
subtract: 3+5i-(-4+6i) is the answer 7-i?
October 27, 2008

Math
Express in terms of i and simplify: sqrt-54 is the answer -3isqrt6
October 27, 2008

Math problem
A disoriented driver crosses diagonally from one corner of a 150 m by 275 m lawn to the far corner. How far does the wayward driver drive across the lawn? Give an approximate answer to three decimal places.
October 27, 2008

Math
Simplify ^3 sqrt symbol 4x ^3 sqrt symbol 6y Would I combine the 4x and the 6y?
October 27, 2008

math help
On the paper the 5 is a small five and over the sqrt root symbol and inside the square root is x^7 and y^4
October 26, 2008

math help
This problem is a little different Simplify: ^5 sqrt symbol(x^7 y^4) How would I solve this problem?
October 26, 2008

Math
I am kinda stuck on this one Simplify: (x^7 y^4)to the 1/5 power I don't know what to do for this problem. I am lost with what to do with the exponents when you have a number on the outside of the root.
October 26, 2008

Math
I am kinda stuck on this one Simplify: ^5sqrt(x^7 y^4) I don't know what to do for this problem. I am lost with what to do with the exponents when you have a number on the outside.
October 26, 2008

Math
^3sqrt4x ^3sqrt6y Not sure of how to work this problem.
October 26, 2008

Math
yes it is sqrt [ (4x^2)/(36y^6)]
October 26, 2008

Math
Simplify: sqrt(4x^2)/(36y^6) is the answer x/(3y^3)?
October 26, 2008

Math
Yes, it is (x^7 y^4)1/5
October 26, 2008

Math
I am kinda stuck on this one Simplify: ^5sqrt x^7 y^4 I don't know what to do for this problem. I am lost with what to do with the exponents when you have a number on the outside.
October 26, 2008

Math
Okay I understand thank you both.
October 26, 2008

Math
is it x-4
October 26, 2008

Math
Simplify: sqrt x^2-8x+16 I know that this can be factored out to sqrt (x-4)(x-4) what do i do next?
October 26, 2008

Math
Simplify: square root of 25a^2 I have the answer as 5a is that right?
October 26, 2008

Math help
the symbol ã should be the square root symbol
October 26, 2008

Math help
Simplify: ^3ã-216/(x^9) I have the answer as -6/(x^3) Is that right?
October 26, 2008

Math
square root 63 I have the answer as 3square root 7
October 26, 2008

Math
Simplify: ã63 I have the answer as 3ã7 is that right?
October 26, 2008

Math check 4
I tried it again I think it is 0,6/5 is that right?
October 12, 2008

Math check 4
Okay I tried it again. I came up with 0,12/5 is that right?
October 12, 2008

Math check 4
Find the y-intercepts for the function given by: f(x)= 4/(x+5)-1/(x-4)/2/(x-3)+3/(x+2) Math check - Damon, Sunday, October 12, 2008 at 5:56pm The y axis intercepts are the values of the function when x = 0 4/5 - [(1/-4)] / [(2/-3)] + 3/2 Math check - shawn, Sunday, October 12...
October 12, 2008

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