# Posts by shawn

Total # Posts: 579

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

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

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

Math help Thanks
Thank you so much

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

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.

word problem 3 thanks
I forgot to move the decimal one more place.

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

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?

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?

Math question thanks
thanks so much

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?

Math word problem 2
You are really good. Thanks. I really appreciate the breakdown of the problem.

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?

Math word problem check
oh okay thanks.

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...

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

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

Math word problem

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?

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

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

Math question
Thanks I understand now.

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

Math help
Thanks

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

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

Algebra
Thanks

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

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

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

geography
sorry i meant titusville PA and i got it but thanks

geography
what happened in titusville in 1559

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

What does a magician do when he walks to the edge of a cliff?

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

Math check
multiply: sqrt-25 sqrt-100 is the answer 50?

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

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...

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

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

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

Math word problem
And how would I do that?

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?

Math check
correct the -2 is on the outside of the square root symbol.

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

Math check
I have the answer as x=4 is that right?

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

math check
Thanks

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

Math
sqrt (x^5 y^2) +sqrt(9xy^2)

MAth
^5 sqrt symbol a^6/ ^4 sqrt symbol a^3

MAth
(3+sqrt x)(4- 3 sqrt x)

Math
Simplify: 9 sqrt5 -3 sqrt5

Math
^4sqrt symbol(x^2 y^3)^3sqrt symbol(xy)

MAth algebra
Simplify ^5 sqrt symbol(x^6y^5)/^5 sqrt symbol(x^2 y^2)

Math
The problem is solve x= sqrt10x-4-2

Math
Solve: x= sqrt(10x-4-2)

Math
rationalize the denominator sqrt 5/ (5+sqrt6)

Math
I have the answer as 10-4sqrt6 is that right?

Math
if f(x)=x^2 find f(2-sqrt6)

math
if f(x) = sqrt(9-3x) determine the domain of f

MAth
Express using exponential notation sqrt (6xy)^3

Math
Express using radical notation : (6ab)^4/3

Math
Simplify: (4+2i)/2i(4-2i)^-1

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

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

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?

Math
Multiply: sqrt-25 sqrt-100 is it 50?

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

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

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.

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

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

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

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.

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.

Math
^3sqrt4x ^3sqrt6y Not sure of how to work this problem.

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

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

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

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.

Math
Okay I understand thank you both.

Math
is it x-4

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?

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

Math help
the symbol ã should be the square root symbol

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

Math
square root 63 I have the answer as 3square root 7

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

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

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

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...

Math
Solve: 3/(9x-6)=5/(7x+1) I have the answer of 11/8 it is probably wrong.

Math check 3
Simplify: 9/(y+8)-y/(y-2)+(y^2+4)/(y^2+6y-16) IS the answer y-14/(y-2)(y+8)?

Math check
Is it 0,63/50

Math check
Find the y-intercepts for the function given by: f(x)= 4/(x+5)-1/(x-4)/2/(x-3)+3/(x+2) I am stuck

Math
Thanks so much

Math
Simplify: (X^2+X-2)/(X^2-9)/(X^2-6X-16)/(X^2-6X+9) I have the answer as (X-3)(X-1)/(X-8)(X+3) is this right?

Math check
Thanks

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