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Question 65899: If a=0.65 and b=1.28 and c= -5/2,evaluate -a(-b)+c.I don't get what to do at all,my answer I get is -5.83 and that's wrong as I was told can you help me? And I have two more problems and that's it.The next one is solve the equation for x, 6x minus 18=4x+8 and I don't know where to begin.And the last one is solve the equation for n,-55 minus 4n=13,there is another problem that I don't know where to begin can you please help me, thank you very much.
Click here to see answer by chitra(359)

Question 65914: I have three fraction questions that I need help with because I'm not good with fractions at all the question are,solve the equation for b, 11over12+b=5over6 and I don't know where to start.The next one, solve the equation for f, f-(-7over10)=-4over5.And the last one is, if c=5over6 and d=1 over 4,evaluate 8c over-d and that is the last question thank you for any help I can get.
Click here to see answer by stanbon(26291)

Question 65923: Solve for the indicated variable.
a. 2L+2W=12,for W
b. A=BH+C,for H
Click here to see answer by funmath(2873)

Question 65930: Can you please help me on this question? Mr. Jones has taken a survey of college students and found that 80 out of 81 students studied last weekend. If the college has 7411 students, what is the best estimate of the number of students who studied last weekend?
Click here to see answer by 303795(562)

Question 66031This question is from textbook An Incremental Development

: simplify
7 - 5i
divided by
5 + iThis question is from textbook An Incremental Development

Click here to see answer by josmiceli(3012)

Question 66000This question is from textbook Algebra 2 with trigonometry
: This question is from textbook Algebra 2 with trigonometry

Click here to see answer by funmath(2873)

Question 66007: This is a problem off of the practice equation problems from this site. I started to work out this problem: 2x^4-54x. I got as far as 2x(x^3-27). I couldn't figure out how they moved from that to the answer of 2x(x-3)(x^2+3x+9)
Can you show the steps on how to get that final answer? I tried to figure it out on my own, but I wasn't even close. Thanks!
Click here to see answer by Cintchr(475)

Question 66057This question is from textbook beginning algebra

: I tried to start this problem by putting it in standard form but I'm stuck from here
X^2=10x-24
X^2-10x+24=0
a=X, b=-10, c=24
How do I solve for the rootThis question is from textbook beginning algebra

Click here to see answer by algebrapro18(206)

Question 66056This question is from textbook beginning algebra

: I'm supposed to solve for the roots of each quadratic equation by using the factoring method. This is so confusing to me it's almost painful. I honestly d^2+3x-40=0 on't know where to start.
Xis the problem. If you could get this to make sense to me I would greatly appreciate it.
KarenThis question is from textbook beginning algebra

Click here to see answer by algebrapro18(206)

Question 66056This question is from textbook beginning algebra

Click here to see answer by ptaylor(1578)

Question 66056This question is from textbook beginning algebra

Click here to see answer by josmiceli(3012)

Question 66068This question is from textbook beginning algebra

: Just looking at this problem I am not able to put it in standard form.
P^2+15p+25=6p+5
I'm supposed to be solving for the root of each equation.
It's just not making sense how I should write this.
Thank youThis question is from textbook beginning algebra

Click here to see answer by algebrapro18(206)

Question 66070: Can you please tell me how to solve this? [100*(x-500)-1350]*14=10,000
Thanks,
Tanya
Click here to see answer by algebrapro18(206)

Question 66070: Can you please tell me how to solve this? [100*(x-500)-1350]*14=10,000
Thanks,
Tanya
Click here to see answer by stanbon(26291)

Question 66073: 5*6x+6*3x=400
Click here to see answer by Nate(3495)

Question 66073: 5*6x+6*3x=400
Click here to see answer by algebrapro18(206)

Question 66002This question is from textbook Algebra 2 with trigonometry
: 9x+2/3x2-2x-8 + 7/3x2+x-4
Thank youThis question is from textbook Algebra 2 with trigonometry

Click here to see answer by Nate(3495)

Question 66083: -4(2x - 3)=-8x + 5
Click here to see answer by funmath(2873)

Question 66080: 9x+7=5x-3
Click here to see answer by funmath(2873)

Question 66113: 6y-3=6y+8 show your work
Click here to see answer by ptaylor(1578)

Question 66156: , g(x)=x-1,
express r and s in terms of f, g, and h.
Click here to see answer by stanbon(26291)

Question 66154: solve 2abs(x-3)+5=15 abs stands for absolute number
solve abs(3x-5)greater and equal to 2
Click here to see answer by Nate(3495)

Question 66148: Solve each equation:
1. 3x + 5 - 6x = 3 - x
2. 3 - (1/5)(x) = 2
3. x - .2x = 6.4
Click here to see answer by funmath(2873)

Question 66182This question is from textbook McDougal Littell
: Please help solve.
Solve the equation.Check for extraneous solutions.
x^5/2=32This question is from textbook McDougal Littell

Click here to see answer by chitra(359)

Question 66192: Divide the fraction:
6p-18 3p-9
----- / -----
9p p^2+2p
The only thing I understand of this problem is I need to flip the second eqaution. Other than this the information is slim. Thank you
Click here to see answer by ankor@dixie-net.com(6693)

Question 66222: 3N+N=
Click here to see answer by checkley71(8405)

Question 66195: Subtract and write in simplest form:
2 3
------- - --------
5w+10 2w-4
2-3 = -1
5w + 10 = 15w
2w - 4 = -2w
15w - -2w = 13w
Leaving the equation looking like:
-1
---
13w
Is this correct or did I mess it completely up? Thank you
Click here to see answer by checkley71(8405)

Question 66193: Add and express in simplest form:
5 11
--- + ----
4cd 4cd
I believe the answer to this problem is:
16
---
8cd
Simplest form is
1
--
2cd
Is this correct? Thank you
Click here to see answer by funmath(2873)

Question 66207: an open top box is to be made so that its width is 4 ft and its volume is 40 ft^3. the base of the box costs $4/ft^2and the sides cost $2/ft^2.
A) express the cost of the box as a function of its length (l) and height (h).
B) find a relationship between (l) and (h)
C) express the cost as a function of (h) only
D) give the domain of the cost function
E) using a graphing calculator or ocmputer to approximate the dimensions of the box having the least cost.
Click here to see answer by ankor@dixie-net.com(6693)

Question 66268: Write the expression in simplest form:
4x-28
-----
5x-35
I am not sure how to do this? Thank you so much for your help :-)
Click here to see answer by checkley71(8405)

Question 66271: Subtract and put in simplest form:
2 3
----- - -------
5w+10 2w-4
This problem has completely lost me, needing some help on this one, thank you for the help you offer.
Click here to see answer by stanbon(26291)

Question 66172: x-y=0
12x-5x=-21
Click here to see answer by checkley71(8405)

Question 66269: Write in simplest form:
4r^2 - 25s^2
--------------
2r^2+3rs-20s^2
Can anyone show me exactly how to figure this problem out please? Thank you
Click here to see answer by checkley71(8405)

Question 66270: Divide the fraction:
6p-18 3p-9
------- / ------
9p p^2+2p
The only step I understand of this is to flip the last equation making it look like this:
6p - 18 p^2 + 2p
------- * ---------
9p 3p-9
After this I am lost, can anyone help me figure out this problem please? Thank you!
Click here to see answer by checkley71(8405)

Question 66288: Solve and check for X:
x x
--- - --- = 1
6 8
Thank you for your help :-)
Click here to see answer by pwac(251)

Question 66254: If F(x)= 3X to the 3rd power -6X to the 2nd power - x + 7, what is the value of f(2) + f(-2)?
This question is multiple choice, it is either A. -34, B. 0, C. 2, D. 7, E. 14
Click here to see answer by 303795(562)

Question 66245: Solve the open sentence. then graph the solution set.
l r+3 l = 10 l=absolute value marks
i didnt get this at all in class today, please help me.
Click here to see answer by stanbon(26291)

Question 66190: Write the expression in simplest form:
4r^2-25s^2
----------
2r^2+3rs-20s^2
I have no idea where to start on this problem. Thank you so much :-)
Click here to see answer by ptaylor(1578)

Question 66297: 1. draw the graph of each line using its y-intercept and its slope:
4x+3y=9
2. determine if the lines are parallel, perpendicular, or neither:
y= 1/3x+1/2
3. find the equation of the line, write answer in slope-intercept form
The line is parallel to -3x+2y=9
Click here to see answer by checkley71(8405)

Question 66291: Solve and check for X:
5 2 3
------ + --------- = ------
x+6 x^2+7x+6 x+1
This problem has lost me completely, thank you for the help
Click here to see answer by funmath(2873)

Question 66289: Solve and check for X:
X X+1 8
----- - ----- = -----
x-2 x x^2-2x
Thank you for the wonderful help on this
Click here to see answer by ankor@dixie-net.com(6693)

Question 66357: What values for X must be excluded in the following fraction:
x+5
----
-1
A) 5
B) none
C) 0
D) -5
This problem has lost me, and the closest I can figure out is none need to be excluded. Is this correct?
Click here to see answer by ptaylor(1578)

Question 66369: Subtract and write in simplest form:
12 10
---- - ----
Z Z
Is the answer:
2
---
Z^2
Thank you very much
Click here to see answer by checkley71(8405)

Question 66367: Subtract and write in simplest form:
5x - 3 x+3
------ - ------
6 6
Thank you very much for the help
Click here to see answer by checkley71(8405)

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