Thursday

December 8, 2016
Total # Posts: 564

**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 }2ã6)/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: ^3ã-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 3ã7 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*

**Math**

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

*October 12, 2008*

**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)?

*October 12, 2008*

**Math check**

Is it 0,63/50

*October 12, 2008*

**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

*October 12, 2008*

**Math**

Thanks so much

*October 12, 2008*

**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?

*October 12, 2008*

**Math check**

Thanks

*October 12, 2008*

**Math check**

subtract and simplify: 4a^2/(a-b)- (4b^2-8ab)/(b-a) I have the answe as 4(a-b) is this correct?

*October 12, 2008*

**Math check 3**

f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). I understand this so far f(a)=f(a+15) 1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7) I have multiplied the LCD of (a-8)(a+7)(a+22)by both sides with no luck. This is a multiple choice question a.) -161/8 b.) 120/7 c.) 161/7...

*October 12, 2008*

**math check question**

Subtract and Simplify: 4a^2/(a-b)-(4b^2-8ab)/(b-a) I have the answer as 4(a+b)^2/(a-b) or should it be 4(a-b)^2/(a-b) Responses Math problem check - bobpursley, Sunday, October 12, 2008 at 4:23pm just the numerator.. 4a^2-8ab + 4b^2, right? 4(a-b)^2 Now does that reduce with ...

*October 12, 2008*

**Math problem check**

What about 4a^2/(a-b)-(4b^2-8ab)/(b-a) I thought that you would multiple the second part of the equation by -1 -(4b^2-8ab)/(b-a) to get the common LCD of a-b So I thought the equation would be 4a^2/(a-b) + (4b^2 + 8ab)/(a-b) I have the answer as 4(a+b)^2/(a-b)

*October 12, 2008*

**Math problem check**

Okay I have the answer as 4(a-b) is that right

*October 12, 2008*

**Math problem check**

Subtract and Simplify: 4a^2/(a-b)-(4b^2-8ab)/(b-a) I have the answer as 4(a+b)^2/(a-b) or should it be 4(a-b)^2/(a-b)

*October 12, 2008*

**Math problem check**

Simplify: (2/a + 6/b) / (8/ab + 4/a^2) I have the answer as a(3a+b)/(4a+2b) Is that correct?

*October 12, 2008*

**Word problem check**

Thank you

*October 12, 2008*

**Word problem check**

one summer, Van mowed 4 lawns for every 7 lawns mowed by Fiona. Together they mowed 132 lawns. How many did Fiona mow? I have the answer as 84 is that correct?

*October 12, 2008*

**Math problem still stuck**

So you are saying that it is none of the multiple choice answers of -161/8 120/7 161/7 or -17 ?

*October 12, 2008*

**Math problem still stuck**

When I plug in the values what am I looking to find?

*October 12, 2008*

**Math problem still stuck**

Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). I understand this so far f(a)=f(a+15) 1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7) I have multiplied the LCD of (a-8)(a+7)(a+22)by both sides with no luck. This is a multiple choice question a.) -161/8 b.) 120/7 c.) ...

*October 12, 2008*

**Math check 2**

I got it thanks

*October 12, 2008*

**Math check 2**

Solve: (t+24)/(t^2-t-56)+7/(t-8)=3/(t+7) I do know that (t^2-t-56) can be factored out to (t-8)(t+7) so I have the equation as (t+24/(t-8)(t+7) +7(t+7)/(t-8)(t+7)-3(x-8)/(t-8)(t+7) (t-24) + 7(t+7)=3(t-8) solve for t. The choices are: a.)-97/5 b.)122/5 c.)-13 d.)-13/5 Math ...

*October 12, 2008*

**math check**

Thank you

*October 12, 2008*