Thursday
February 11, 2016

# Posts by Helper

Total # Posts: 1,755

Math
y = -6x Slope m = -6 There is no y-intercept. Pick points to graph. y = -6x x = 0, y = 0 x = 1, y = -6 x = -1, y = 6 x = 2, y = -12 x = -2, y = 12 If you graph this, you will see a line through the origin. This line does not intersect the y-axis. Therefore, there is no y-...
January 26, 2011

math
17 2/3 + 23 1/4 Find the LCD for 2/3 and 1/4 LCD = 12 17 8/12 + 23 3/12 = ? Now, can you add them? Reduce the answer if necessary
January 26, 2011

math
-12 + r = -11 Add 12 to both sides 12 + 12 + r = -11 + 12 r = ?
January 26, 2011

Algebra
x = lbs of cheaper coffee 2.75x = value of cheaper 100 - x = lbs of better coffee 5(100 - x) = value of better 100 = lbs of mixture 3.90(100) = value of mixture 2.75x + 5(100 - x) = 3.90(100) Solve for x, lbs of cheaper 100 - x = lbs of better
January 26, 2011

Algebra
RT = D (Rate x Time = Distance) R = rate of southbound train 4 = time of southbound 4R = distance of southbound train R - 12 = rate of northbound train 4 = time of northbound 4(R - 12) = distance of northbound train Since the sum of distances = 528 4R + 4(R - 12) = 528 Solve ...
January 26, 2011

math
Do you mean 5 x 100 = 500 12 x 10 = 120 500 + 120 = 620
January 26, 2011

Algebra
d = number of dimes .10d = value of dimes 85 - d = number of quarters .25(85 - d) = value of quarters 0.10d + .25(85 - d) = 14.50 Solve for d, number of dimes 85 - d = number of quarters
January 26, 2011

math
100 cm = 1 meter 4.5 meter x 100 cm = 450 cm 450 cm / 4.5 cm = number of pieces of ribbon 450/4.5 = ?
January 26, 2011

math
x = attendance at Friday's game 2/3 x + 7000 = attendance at Thursday's game x + 2/3 x + 7000 = 77000 Solve for x - Fri 2/3 x + 7000 - Thur
January 26, 2011

Algebra 1
Parallel to 3x = 5y + 2 through P(-5,8) Parallel lines have equal slopes First, you need to put the given line in slope-intercept form, to find the slope. Slope-intercept form, y = mx + b m = slope b = y-intercept 3x = 5y + 2 To put in slope-intercept form, solve for y. 3x = ...
January 26, 2011

algebra
x = grams of copper 0.075x = value of copper 170 - x = grams of silver 0.925(170 - x) = value of silver (100 - 7.5 = 92.5) .16(170) = value of mixture 0.075x + 0.925(170 - x ) = 0.16(170) Solve for x, grams of copper (170 - x) = grams of silver
January 26, 2011

maths
If your equation is, x + 3x - 6.75 = 0 4x = 6.75 x = 1.6875 You should ALWAYS proofread your problem after posting to make sure it makes sense. I have no idea what the ? means.
January 26, 2011

ctc
Do you have a question?
January 26, 2011

math
From Diana's solution, 2.4 hrs = 2 hrs 24 min To convert .4 hrs to minutes, multiply by 60. .4 hrs * 60 min = 24 min
January 26, 2011

Math
See 1st link below under Related Questions. This exact question was answered.
January 26, 2011

Algebra II
Poorly worded question. Natural numbers are the counting numbers, 1,2,3,4,5..... Whole numbers are the natural numbers including zero. No fractional parts or decimals and no negative numbers. What is meant by opposite? Since counting numbers are positive, negative? but ...
January 26, 2011

Physics
See the links below under related questions. At least three of the links have answers to this almost exact question.
January 25, 2011

math
You're welcome.
January 25, 2011

math
The formula for perimeter is, P = 2w + 2 L 30 = 2w + 2L 30 = 2(w + l) 15 = w + l So, for a perimeter of 30, you want to sketch rectangles that the width and length total 15. Some possible rectangles, 14 + 1 = 15 13 + 2 = 15 12 + 3 = 15 11 + 4 = 15 10 + 5 = 15 9 + 6 = 15 8 + 7...
January 25, 2011

Physics
The first link below does have an answer. Whether it is a complete answer, I wouldn't know. You have to scroll down quite a bit for the answer. I am pasting that answer here. Maybe it will help you get started. Physics - drwls, Tuesday, March 23, 2010 at 9:48pm First you ...
January 25, 2011

Physics
See the 1st link below under Related Questions. A similar problem was answered.
January 25, 2011

CP Geometry
(sqrt(-60/5)) Break it down ((sr(-1))(sr(4))(sr(3))(sr(5)))/(sr(5)) 2i (sqrt(3))
January 25, 2011

Physics
See the 1st two links below under Related Questions. This almost exact problem was answered.
January 25, 2011

math
Lisa, I hope I didn't sound mean to you. That is not my intention. You will never learn unless you try. It takes practice. :) Is there something in particular you don't understand about dealing with fractions?
January 25, 2011

math
Tutors do not do your homework. It is obvious that you are struggling with this. The only way you will learn is practice. Try these problems YOURSELF. If you have a specific question we will be more than happy to help, but YOU must attempt these problems first.
January 25, 2011

math
And, ignore how I said that I do it. Do it your way, however you were taught. Your way IS correct. I just prefer to do it the way I was taught. I don't want to confuse you. :)
January 25, 2011

math
Ok, sorry, your answer 8 25/72, was the SUM, not the final answer, which is the average. 8 25/72 is correct for the sum. You have to divide the sum by 2, for the average. So however you were adding is correct.
January 25, 2011

math
What grade are you in? Unless there is a new way taught for adding fractions, you can't do it like that. You have to convert each mixed number to a fraction 3 2/9 = 29/9 5 1/8 = 41/8 Then you add 29/9 + 41/8 Find the LCD 232/72 + 369/72 = 601/72 601/72 divided by 2, ...
January 25, 2011

math
Not correct. Post your work so I can see what you are doing wrong, because you are not even close. :)
January 25, 2011

math
Yes, always. All fractions have to have the same denominator to add.
January 25, 2011

Math
How did you get 40 from that? Do you mean 200/(x - 1) = 200/(x + 10) cross multiply 200(x + 10) = 200(x - 1) 200x + 2000 = 200x - 200 NO solution to this
January 25, 2011

Math
Thank you. :)
January 25, 2011

Math
January 25, 2011

Trig
January 25, 2011

Trig
January 25, 2011

general
Thank you Kristin.
January 25, 2011

math
What is 300 + 20? Answer, 320 Is this what you need? If so, you couldn't attempt this?
January 25, 2011

Math
y = sqrt(x^2 + 2x) square both sides y^2 = x^2 + 2x x^2 + 2x = y^2 complete the square x^2 + 2x + 1 = y^2 + 1 (x + 1)^2 = y^2 + 1 take the square root of both sides + x + 1 = (sqrt(y^2 + 1)) - x - 1 = (sqrt(y^2 + 1)) x = -1 + - (sqrt(y^2 + 1)) interchange x and y y = -1 +- (...
January 25, 2011

Math
D = RT (Distance = Rate x Time) Normal Rate R = rate T = time RT = 200 Increased Rate/less time R + 10 T - 1 (R + 10)(T - 1) = 200 Solve these two equation simultaneously. (R + 10)(T - 1) = 200 RT = 200 Expand the first equation and substitute RT = 200, for RT in that ...
January 25, 2011

geometry
If you sketch this out, the ladder, up against the wall, forms right triangle. Using the Pythagorean theorem, you need to find c, the hypotenuse. c^2 = 6^2 + 18^2 Solve for c, the length of the ladder.
January 25, 2011

math
1 square inches = 0.00694444 square feet 12 sq inches = 0.08333 sq ft 1 square ft = 144 sq inches 12 inches squared = 144 sq inches you are both right
January 25, 2011

math
(h+t)^6 = (h + t)(h + t)(h + t)(h + t) (h + t)(h + t) You would have to expand and multiply it out or use the binomial theorem. Or maybe a calculator of some sorts
January 25, 2011

math
You have to try this yourself. It is the only way you will learn. I've already done at least one of these problems for you. First, find the LCD for each . Post your work if you get stuck.
January 25, 2011

Math
See 1st post.
January 25, 2011

Math
You're welcome.
January 25, 2011

Math
0.2|-8| = 1.6 0.2 * 8 = 1.6 |5|-|-7| = - 2 5 - 7 = - 2
January 25, 2011

math
3/2 / 4/5 + 1/2 * 1/2 You need parentheses. Do you mean (3/2 / 4/5 + 1/2) * 1/2 ? or 3/2 / 4/5 + (1/2 * 1/2)?
January 25, 2011

math
Duplicate post. See your 1st post.
January 25, 2011

math
8/24 + 9/24 + 1/24 = 18/24 = 3/4 (3/4)/3 = 3/4 * 1/3 = 3/12 = 1/4 Average = 1/4
January 25, 2011

math
1/3 + 3/8 + 1/24 Find the LCD. In this case, LCD = 24 8/24 + 9/24 + 1/24 = ? Take the sum and divide by 3 for the average.
January 25, 2011

Math(geometry)
Cross off 8 + 0 = 8. Can't have a side of 0.
January 25, 2011

Math(geometry)
Formula for perimeter, P = 2L + 2w 2L + 2w = 16 2(L + w)= 16 L + w = 8 You need numbers that add to 8. 8 + 0 = 8 7 + 1 = 8 6 + 2 = 8 See how many you can come up with. There might be any easier way, that I'm not thinking about. Good luck
January 25, 2011

math
x = the number 6x = x + 6 Solve for x
January 25, 2011

math
164/24 = 6 20/24 = 6 5/6
January 25, 2011

math - algebra
I hit 'post answer' too soon. See below. Dan, Fran, and Stan have 194 cards. Dan has 24 less than Fran, and Stan has 35 more than Fran. How many do each of them have? Let x = the number of cards that Fran has. x + x - 24 + x + 35 = 194 3x + 11 = 194 3x = 183 x = 61
January 25, 2011

math - algebra
Are you sure that this is the exact wording for this problem? Need to know info for either Dan or Stan. You posted this almost exact same problem yesterday. I pasted that post below.
January 25, 2011

public finance
Not enough info. "calculate the MTR for his labor earnings"? More than this is missing too. Mortgage interest expense, itemized deductions, etc.
January 25, 2011

Pre-Algebra
D = RT (distance = rate x time) R = rate 8R >= 420 R >= 52.5
January 25, 2011

Math Algebra
2m +3n=4 -m + 2n= 5 Multiply by 2 (-m + 2n = 5) -2m + 4n = 10 2m + 3n = 4 Add the two equation 0 + 7n = 14 7n = 14 n = 2 To find m, substitute n = 2 in 2m + 3n = 4 and solve for m I'll let you finish Check your answers when you find m
January 25, 2011

geometry
P = 2w + 2L w = width, L = length Since, this is a square, w = L P = 2w + 2w P = 4w 2011 = 4w w = 2011/4 = 502.75 A = Lw Since this is a square, w = L = 502.75 A = (502.75)(502.75) A = ? square inches
January 25, 2011

Math
correct :)
January 25, 2011

Math
Are the sides of triangle BCE, BC, BE and EC ? In rectangle ABCD, is side BC opposite to side AD? If so, AD = BC = 3 If so, since BCE is an equilateral triangle, (all three sides equal)therefore BE = BC = EC = 3. I don't have the advantage of seeing the diagram you are, so...
January 25, 2011

Algebra
Formula for perimeter P = 2w + 2L x = length (L) y = width (w) 2x + 2y <= 60
January 25, 2011

Math Geometry
A line that bisects an angle divides it into two congruent parts. A triangle = 180 degrees 2(27) + 2(34) + x = 180 x = ?
January 25, 2011

Math
Not equal. You are solving an inequality. x > 0.5
January 25, 2011

Math Geometry
A right triangle has an angle of 90 degrees. The sum of the angles in a triangle = 180 degrees. 90 + 16 + x = 180 x = ?
January 25, 2011

Math
7 + 3 = 10 coins 3/10 = fraction of nickles fraction of dimes = ?
January 25, 2011

calculus
[1/(x^2+1)] By Formula, âˆ«1/(1 + x^2)dx = tan^-1(x) + C
January 25, 2011

physics
See the 3rd link below under Related Questions. This almost exact problem was solved there.
January 25, 2011

math
3/2 / 7/10 /5/2 without parentheses, I will divide in order. (3/2)/(7/10) = 3/2 * 10/7 = 30/14 (30/14)/(5/2) = 30/14 * 2/5 = 60/70 = 6/7
January 25, 2011

math
6y = -8x - 18 Put the equation in slope-intercept form, by solving for y 6y = -8x - 18 Divide both sides bu 6 y = -8/6 x - 18/6 Reduce fractions y = -4/3 x - 9/3 Now, the equation is in slope-intercept form. y = mx + b, where m = slope and b = y-intercept Slope m = ? y-...
January 25, 2011

math
x = total employees .80x = 720 Solve for x.
January 25, 2011

social studies
Thank you Ms. Sue! :)
January 25, 2011

social studies
The tutors here don't have a copy of your text book. This is something YOU need to do. READ section 6 of chapter 6. I'm sure you can find 10 important facts. Try.
January 25, 2011

Algebra
Ratio = 4:3 = 4/3 4/3 = x/(2/3) Cross multiply 3x = 4 * 2/3 Can you solve for x now?
January 25, 2011

math
To find the range, put the numbers in order. Range = highest - lowest
January 25, 2011

geometry
Complementary angles = 90 degrees x = one angle 1/3 x = other angle x + 1/3 x = 90 Combine terms and solve for x. Then use the above formula to find the other angle.
January 25, 2011

Math
I said the above because you have the shaded picture to look at, I don't.
January 25, 2011

Math
See your 1st post below. I just finished your problem. Let me know if you think I understood your problem.
January 25, 2011

Math
8x^2+18x-5 (2x + 5)(4x - 1) My method or steps is trial and error. You need to find factors of 8x^2 that also add to 18x. The same for factors of 5. It takes practice. The only way you learn is by practice. Do as many problems as you can and eventually it gets easier.
January 25, 2011

algebra
You're welcome.
January 25, 2011

algebra
I assume you need to solve these equations simultaneously ? 3x + 5y = 0 2x - 5y = -9 Solving by elimination method. The object is to eliminate one of the variables, either x or y. Since you have +5y in the first equation and -5y in the second equation, you ADD the two ...
January 25, 2011

Math
If I am following your problem. The area of ONE shaded face = 64 cm^2 Since, this face is a square, the length L equals the height h. L = H Cuboid SA = 2Lw + 2Lh + 2wh Since you have the SA (surface area) of one face, and L = H, SA = 2Lh SA = 2LL (L = h) 64 = 2L^2 32 = L^2 L...
January 25, 2011

math
See your 1st post below. I worked out the almost exact problem for you. Using the below post as an example, you should be able to at least try to do this problem. Post your work if you get stuck so someone can help you.
January 25, 2011

math
You don't state if this is compounded interest. Assuming simple interest, I = PRT (interest = principal x rate x time) 9006 - 8765 = 241 interest 241 = 8765 x R x T 241 = 8765 x R x 1 241 = 8765R Solve for R, the rate of interest Multiply R x 100 = percent
January 25, 2011

math in topics
Are you sure that is ALL the info you are given? The problem doesn't state how many students? Please recheck your problem.
January 25, 2011

math
Let x = number of trip miles (x - 2) = miles greater than first 2 1.50 + 1.20(x - 2)
January 25, 2011

math
f(x)=x^2+12x+37 y = x^2 + 12x + 37 Solve for x x^2 + 12x = y - 37 Complete the square x^2 + 12x + 36 = y - 37 + 36 (x + 6)^2 = y - 1 Take the square root of both sides +- (x + 6) = (sqrt(y - 1)) x + 6 = (sqrt(y - 1)) -x - 6 = (sqrt(y - 1)) x = -6 +- (sqrt(y - 1)) Interchange x...
January 25, 2011

Science
If you go to google dot com and put in "Seals" in the search box it will bring up more info than you could possibly use. I can't post links, otherwise I would do it for you.
January 25, 2011

Math
REINY answered your earlier post and she said to try doing it yourself. She did a similar example for you to follow. I pasted her example below. Post your work if you get stuck. Math - Reiny, Tuesday, January 25, 2011 at 12:09pm slope of line through the two points = (6-2)/(3-...
January 25, 2011

biology
About what I posted above. You probably have this already. This was a response to the exact question you posted here and there. I did a google search with your question and it directed me to your? other post on that website. I didn't realize this until after I posted above...
January 25, 2011

biology
From cholesterol heart attack dot com Physiological response: "John survived because he grew collateral coronary arteries. The coronary arteries supply the heart muscle with oxygenated blood. Chronic high cholesterol results in plaque accumulating inside the coronary ...
January 25, 2011

equations calculus
This exact question was answered for you yesterday. Please check your posts for an answer before reposting. I have pasted below the answer to this post. calculus - drwls, Monday, January 24, 2011 at 11:39pm Rewrite it as an equation for y in terms of x. y - 0.5 x = y This ...
January 25, 2011

Calculus
This is calculus? h(x)= x^3-x^2+x+6 h(-8) Plug -8 in for x and do the math.
January 25, 2011

Intermediate Accounting
Your question isn't clear. Calculate what? Do you need to calculate the portion of insurance that is a current expense for the year 2011 and the portion that is a prepaid expense or prepaid asset? 4000/2 = 2000. = 1 year expense 2000./12 = monthly expense for 1 year Jan ...
January 25, 2011

math in topics
"how many new are needed on campus" ... How many new ? New what? The answers don't make sense for the question asked. Re-read your whole post for clarity.
January 25, 2011

fraction
2/3 0f 9 Multiply 2/3 x 9 = 18/3 = 6 1/6 x 12 = ?
January 24, 2011

CP Geometry
I knew if was a riddle. That's why I asked "What" ! :)thanks
January 24, 2011

CP Geometry
(sqrt5) * (sqrt15)= (sqrt75)= =(sqrt25)(sqrt3)= 5(sqrt3) What do you call it when the nurse gives you a shot you hardly feel? What?
January 24, 2011