Monday
March 10, 2014

# Homework Help: College

college algebra
Finding domain f(x)=1/x^2-5 Can't remember how to solve, your help is appreciated:-)
Monday, February 18, 2013 at 7:34pm

College Algebra
$400,440 + 845x =1200x$400,440 + 845x = 1199.99x x = # of TVs to get the answer to the second part compare your answer from the 1st to the 2nd.
Monday, February 18, 2013 at 6:30pm

College Algebra
A company is planning to produce and sell a new line of tvs. The fixed cost for the company is $400,440 and each tv cost$845 to produce. If they project the sales price of 1200, how many tvs will need to be sold to break even? If they decide to reduce the price to 1199.99, ...
Monday, February 18, 2013 at 6:27pm

College Algebra
avg rate of change is ∆y/∆x for the interval ∆y = f(10)-f(6) = 295-103 = 192 ∆x = 10-6 = 4 avg rate of change is thus 192/4 = 48
Monday, February 18, 2013 at 4:58pm

College Algebra
Find the average rate of change for function f(x)=3x^(2)-5 at the points x[1]=6 and x[2]=10
Monday, February 18, 2013 at 4:49pm

College Algebra
C(x) = 300000+500x avgC(x) = C(x)/x = 300000/x + 500 P(x) = R(x)-C(x) = -3x^2 + 2700x - 300000 = 3(-x^2 + 900x - 100000) max P(x) at -900/-2 = 450
Monday, February 18, 2013 at 4:27pm

Maths-can someone explain something to me???
And don't give up on the face time. We homeschooled our children for several years, and there are always support groups available. Someone near you will know about vectors. If you can't find anyone in your immediate circle of friends, don't be afraid to visit a ...
Monday, February 18, 2013 at 4:21pm

College Algebra
A company builds bicycles. Their fixed cost is 300,000 and it costs $500 to make each bicycle(labor,materials,etc.) A)What is the cost equation and what is the average cost per bicycle? B)If the revenue equation is -3x^2+3200x where x is the number of bicycles, how many ... Monday, February 18, 2013 at 1:59pm College Algebra 3=k/2^2 6=k/I^2 divide second equation by first. 2=4/I^2 I=sqrt 2 Monday, February 18, 2013 at 11:50am College Algebra Thank you! Monday, February 18, 2013 at 11:43am College Algebra I know how to do this with calculus, but algebraically it starts the same way. L + 2W = 800 L = 800 - 2w A = LW A= (800-2w)w A = 800w - 2w^2 Take the derivative: 800 -4w 800 -4w = 0 to find max. 800 = 4w 200 =w l = 400 Monday, February 18, 2013 at 11:35am College Algebra Pinocchio has a problem with lying. Everytime he lies, his nose grows. The size of his nose grows inversely to the square of the lying index(less truth is a statement). If his nose grows to 3 inches with a lying index of 2, what will be the lying index if his nose grows to 6 ... Monday, February 18, 2013 at 11:00am College Algebra You have 800 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river,find the length and width of the plot that will maximize the area. What is the largest area that can be enclosed? Monday, February 18, 2013 at 10:52am college chemistry Number photons*energy each=.09(65) energy each=hf=h*c/lambda Sunday, February 17, 2013 at 9:37pm college chemistry Assuming that 9.0\% of the energy output of a 65W lightbulb is visible light and that the average wavelength of the light is 550 {\rm nm}, how many photons are emitted by the lightbulb each second? Sunday, February 17, 2013 at 8:50pm College Algebra I was told to start with x^2-8x+16=7/2 so where do i go from there? Thats after / by 2. Sunday, February 17, 2013 at 7:54pm College Algebra 2x^2 - 8x =-25 divide each term by 2 using completing the square, x^2 - 4x = -25/2 take 1/2 the coefficient of the x term, square it, then add it to each side x^2 - 4x +4 = -25/2 +4 (x-2)^2 = -17/2 or -34/4 , (I anticipated to take √ of both sides) x -2 = ± √... Sunday, February 17, 2013 at 7:12pm College Algebra I was told to start with x^2-8x+16=7/2 so where do i go from there? Sunday, February 17, 2013 at 7:00pm College Algebra Add the -25 to the other side... 2x^2-8x+25=0, Now use the quadratic formula to solve for x... Hope this helps Sunday, February 17, 2013 at 4:37pm College Algebra This is my question 2x^2-8x=-25 I cant seem to figure out how to solve for x? Sunday, February 17, 2013 at 4:18pm College Algebra Ok, I am supposing, Now what ? Sunday, February 17, 2013 at 12:08pm College Algebra Suppose that the length of a rectangle is 21 inches and the width is 4 more than one third of the length? Sunday, February 17, 2013 at 11:46am College Algebra In google type this question and you will see answer Sunday, February 17, 2013 at 2:06am college You want to know your gravitational potential energy at A to B, hence why you use mgh equation. gpe= (o.215kg)(9.8m/s^2)(0.30m) that's what you would do to answer this question. Saturday, February 16, 2013 at 11:56pm College Algebra A rectangle is bounded by the x-axis and the semicircle Y= SQ RT of 4-x^2. Write the area A of the rectangle as a function of x and determine the domain of the function. Saturday, February 16, 2013 at 11:38pm college algebra X = Xv = h = 3. V(h,k)= V(3,1). P(1,9) Y = a(x-h)^2 + k Y = a(1-3)^2 + 1 = 9. 4a + 1 = 9 4a = 9-1 = 8 a = 2. Eq: Y = 2(x-3)^2 + 1 Axis: D(h,Y1), V(h,k), F(h,Y2). Axis: D(3,Y1), V(3,1), F(3,Y2). DV = k-Y1 = 1/4a = 1/8 1 - Y1 = 1/8 Y1 = 7/8. VF = Y2-k = 1/4a = 1/8 Y2-1 = 1/8 Y2... Saturday, February 16, 2013 at 8:34pm COLLEGE MATH What is the PROCUREMENT cost of this system? Cost Types Cost (in millions) Research/Development$400 Procurement of Prime mission $800 Procurement of support equipment$100 Procurement of Initial Spares $100 Operations & and Support$70,000 Disposal $100 ANWERS! (A). 800 ... Saturday, February 16, 2013 at 8:30pm Westwood college Sixth Fourth Bank has an issue of preferred stock with a$5.50 stated dividend that just sold for $97 per share. What is the bank’s cost of preferred stock? Saturday, February 16, 2013 at 5:44pm college algebra (3,1) is the vertex of the parabola. (1,9) and (5,9) y = ax^2 + bx + c Substitue in the point (3,1) 1 = a(9) +b(3) +c Do the same for (1,9) and then again for (5,9) You will have 3 equations and 3 variables. Solve for a, b, c. There is also a formula to find the equation using... Saturday, February 16, 2013 at 2:03pm college algebra Axis symmetry x=3 passing thru (3,1) and (1,9) Not sure how to solve Saturday, February 16, 2013 at 1:06pm math the hostel of a college having 320 students has a stock of food for 80 days if 20 students leave the hostel after 20 days for how many more days will the food last? Saturday, February 16, 2013 at 4:29am I need help Thing #1 Life is looooong!! the torture of childhood will be something you look back on and draw strength from, because you rose above the irrational. Thing #2 You are not alone! My step mom was verbally and physically abusive and my dad was working 12 - 16 hour days doing ... Saturday, February 16, 2013 at 3:43am college physics 1 Ww = m*g = 29.2kg * 9.8N/kg = 286.2 N. = Wt. of the wood. Fp = 286.2*sinA = Force parallel to incline. Fv = 286.2 *cosA = Force perpendicular to incline. 286.2*sinA-0.51*286.2*cosA = m*a 286.2*sinA -146*cosA = m*0 = 0. 286.2*sinA = 146*cosA Divide both sides by cosA: 286.2*(... Friday, February 15, 2013 at 8:09pm college algebra Axis of symmerty x=3 passing thru (3,1) and (1,9) What is the best way to solve? Friday, February 15, 2013 at 7:32pm algebra story problem I just answered this one above for someone that posted as "college student" Friday, February 15, 2013 at 5:37pm College Math What is the PROCUREMENT cost of the below system? Cost Types Cost (in millions) Research/Development$400 Procurement of Prime mission $800 Procurement of support equipment$100 Procurement of Initial Spares $100 Operations & and Support$70,000 Disposal $100 ANWERS! (a) 800 ... Friday, February 15, 2013 at 3:59pm math algebra the length of a rectangular photograph is 11 in. more than the width. if the area is 80in^2 what are the dimensions of the photograph ? the width is___ in. and the length is___ in. Friday, February 15, 2013 at 3:51pm Math algebra the length of a rectangular photograph is 8in. more than the width. if the area is 560 in^2 what are the dimensions of the photograph? the width is____ in. and the length is ____ in. Friday, February 15, 2013 at 3:31pm Copperbelt international college Draw a diagram. If the angle subtending the chord is x, sin(x/2) = 2.8/3.5 = 0.8, so x/2 = 0.927 The area of a segment is 1/2 r^2 (x-sinx) So, the smaller segment has area 1/2 * 3.5^2 * (2*.927-.8) = 6.46 The area of the whole circle is pi * 3.5^2 = 38.48 so, the area of the ... Friday, February 15, 2013 at 4:57am Copperbelt international college A chord PQ of length 5.6cm divides a circle of radius 3.5cm into two segments.calculate the difference in areas between major and minor segment in the circle of chord PQ. Friday, February 15, 2013 at 1:07am college physics 1 The coefficient of static friction between a block of wood of mass 29.2-kg and a rough table is 0.51. The table is slowly tilted until the block of wood starts to slide down the surface. At what angle of the table with respect to the horizontal does the wood start to slide? ... Thursday, February 14, 2013 at 3:21pm college algebra it will break down to 2 cases: x+3 = 2-x OR x+3 = -2+x 2x = -1 x = -1/2 or x+3 = -2+x 5 = 0 , not very likely, so no solution from that part x = -1/2 check: LS = |-1/2 + 3| = |2.5| = 2.5 RS =|2 - (-1/2) | = |2.5| = 2.5 = LS my answer is correct Wednesday, February 13, 2013 at 8:57pm college algebra Solve equation |x+3|=|2-x| Not sure which way to go to solve. Thanks Wednesday, February 13, 2013 at 7:28pm college chemistry 101 why does an opened bottle of carbonated water keep its frizz longer if kept in a refrigerator than if left at room temperature? Wednesday, February 13, 2013 at 4:03pm college algebra since |x| = x if x >= 0, and -x if x<0, either (4+2x) - 3 > 5 or -(4+2x) - 3 > 5 so either 4+2x-3 > 5 2x+1 > 5 2x > 4 x > 2 or -4-2x-3 > 5 -2x - 7 > 5 -2x > 12 x < -6 Wednesday, February 13, 2013 at 3:01pm college algebra Solve absolute value inequality, use interval notations. |4+2x|-3> I know the answer is x>2 or x<-6 But I'm unsure how to solve it. Thanks Wednesday, February 13, 2013 at 2:57pm College p = mv = 10 * 10 = 100 a = ∆v/∆t = (20-0)/4 = 5 F = ma = 10*5 = 50 When you are only given a few pieces of data, your formulas will be relatively simple. Wednesday, February 13, 2013 at 12:49pm College A bod of 10kg is traveling in straight line at 10m/s (a)what is de momentum?(b)what is de average force required to increase its velocity 4rom zero to 20m/s in 4seconds? Wednesday, February 13, 2013 at 9:28am maths the heights of female students at a particular college are normally distributed with the mean 169 cm and standard deviation 9 cm. 1) Given that 80% of these female students have a height less than h cm ,find the value of h. 2) Given that 60% of these female students have a ... Wednesday, February 13, 2013 at 7:11am college trigonometry LS = (sinx/cosx - cosx/sinx)/(sinxcosx) = [(sin^2x - cos^2x)/(sinxcosx)]/sinxcosx = (sin^2x - cos^2x)/(sin^2x cos^2x) =sin^2x/(sin^2xcos^2x) - cos^2x/(sin^2xcos^2x) = 1/cos^2x - 1/sin^2x = sec^2x - csc^2x ≠ RS you have a typo, your right side should have been sec^2x - ... Tuesday, February 12, 2013 at 11:41pm college trigonometry verify identity: (tanx-cotx)/sinxcosx=sec^2x csc^2x Tuesday, February 12, 2013 at 11:28pm college chemistry If i have a highly polar mobile phase, what will happen to the non-polar or less polar compounds during chromatography? will they move less up the TLC plate or actually even more because the mobile phase itself is so polar. Tuesday, February 12, 2013 at 6:45pm college Mathematics Just draw a Venn diagram. There are 3 regions, we'll call them m,s,r, with overlapping regions labeled, ms,mr,rs,mrs. Now start filling them in, from the inside out mrs = 3 rs = 7-3 = 4 mr = 10-3 = 7 ms = 13-3 = 10 m = 34-(3+7+10) = 21 r = 20-(3+4+7) = 6 s = 27-(3+4+10) = ... Tuesday, February 12, 2013 at 10:34am college Mathematics I have been trying to figure this out for day's please help if you can. A survey of 59 customers was taken at a book store regarding the type of novels purchased. The survey found 34 customers purchased mysteries, 27 purchased science fiction, 20 purchased romance novels, ... Tuesday, February 12, 2013 at 10:21am finance 1. The target structure for QM industries is 38% common stock, 15% preferred stock, and 47% debt. If the cost of common equity for the firm is 17.3%, the cost of preferred stock is 9.3%, the before tax cost is 8.9%, and the firms tax rate is 35%, what is the QM's weighted ... Tuesday, February 12, 2013 at 10:01am College Physics 2 A parallel-plate air capacitor is made from two plates 0.250 m square, spaced 0.70 cm apart. It is connected to a 140 V battery. a) What is the capacitance? C = 7.90×10−11 F b) What is the charge on each plate? Enter your answer as an absolute value of charge. Q = ... Monday, February 11, 2013 at 9:09pm college chemistry===&gt;Organic Chem Lab. It depends on what you are separating; polar attracts polar, and polar repels nonpolar. Monday, February 11, 2013 at 6:17pm college chemistry How will the Rf values be affected if i use a highly polar mobile phase instead of one that has intermediate polarity? Monday, February 11, 2013 at 4:51pm college algebar Do you mean x - 2 divided by 6 or x -2/6 I think you probably mean (x-2/6 If that is correct, then multiply each part by 6 and then add 2 to each part. That will leave x in the middle. I call these the "sandwich problem" because x is sandwiched betweent the lower and... Monday, February 11, 2013 at 2:26pm college algebar 5< x-2/6 <6 Monday, February 11, 2013 at 1:26pm Business Calculus Pam and Tim decide to start saving money for their daughter's college education. They open a college savings plan (529) with a 500 dollars initial investment and next month start to make monthly deposits of 120 dollars. If the account pays 8% compounded monthly, how much ... Monday, February 11, 2013 at 1:56am college algebra Assume the > signs are really ¡Ý We will change them later. Subtract 9.1 from each term in the inequality -7.6 < -0.5x < -2.3 Double each term -15.2 < -x < -4.6 Multiply each term by -1, changing the directions of the < signs, 4.6 > x > 15.... Sunday, February 10, 2013 at 1:00pm college algebra Need to solve what are the steps to do so? 1.5<9.1-0.5x<6.8. <they are underlined. Thanks Sunday, February 10, 2013 at 12:47pm college algebra I need to figure out how to solve this equation your help will be much appreciate:-) √5(x-1.2)-√3x<5(x+1.1) Sunday, February 10, 2013 at 12:45pm STAT Functional foods are those containing nutritional supplements in addition to natural nutrients. Examples include orange juice with calcium and eggs with omega-3. Kolodinsky, et al. (2008) examined attitudes toward functional foods for college students. For American students, ... Sunday, February 10, 2013 at 1:46am STAT Do you view a chocolate bar as delicious or as fattening? Your attitude may depend on your gender. In a study of American college students, Rozin, Bauer, and Catanese (2003) examined the importance of food as a source of pleasure versus concerns about food associated with ... Sunday, February 10, 2013 at 1:43am college algebra Please show me the steps to solving this equation:-) √5(x-1.2)-√3x<5(x-1) Your help is greatly appreciated. Sunday, February 10, 2013 at 1:03am College Algebra I will assume at equilibrium, Supply = Demand q^2 + 100000 = 45q q^2 - 45q + 10000 = 0 This equation has no real solution. (I guess I don't understand this topic well enough) Saturday, February 9, 2013 at 10:42pm college chem Show your work and I'll try to find the error. Saturday, February 9, 2013 at 8:09pm College Algebra Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000 Saturday, February 9, 2013 at 7:40pm College Physics Total Acceleration will consist of Centripetal (which is in the same direction as the r vector) and Tangential (which at any given moment will be your retarding one. With that we can set up a triangle that gives us the angle needed. Since we don't know radius we can use V=... Saturday, February 9, 2013 at 7:27pm College Physics bobpursley's answer is wrong. The question isn't a satellite revolving earth anyways. Saturday, February 9, 2013 at 6:58pm college chem Biphenyl, C12H10, is a nonvolatile, non ionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 14.3 g of biphenyl in 25.8 g of benzene? Saturday, February 9, 2013 at 5:42pm college algebra 3x-2y = 8 -2y = -3x+8 y = 3/2 -4 slope = 3/2 2y + 3x = -4 2y = -3x -4 y =-3/2 -2 y-intercept = -2 Now use y = mx + b to write your equation Saturday, February 9, 2013 at 1:58pm college algebra Write an equation of the line parallel to the line given by 3x-2y=8 and having the same y-intercept as the line given by 2y+3x=-4 (show work) I am stuck with this problem. Can you please show me how to do these types of equations? Thank you Saturday, February 9, 2013 at 1:53pm 7th grade language arts Ms. Sue please oh no! Actually it was "a webpage on the evolution of dogs written by a college professor" Friday, February 8, 2013 at 7:51pm College Algebra If the length of molding to create the frame is 96 inches. If the frame surrounding the picture is 3.5 inches wude and the length is 6 inches longer than the width, what are the dimensions (length and width) of the picture that could be placed inside? Friday, February 8, 2013 at 6:23pm College Algebra for the sets {1,3,5,7,9} and {1,2,3,4,5} Define the ¿ and the U. Friday, February 8, 2013 at 6:15pm 7th grade language arts Ms. Sue please 1. Which of the following is not a part of evaluating sources? (1 point) checking the author's credentials questioning possible bias making sure the information is current agreeing with the author's opinions 2. Which of the following websites would you most likely use ... Friday, February 8, 2013 at 5:47pm college algebra F(x) = 1144.7(x-1990) + 35,834 =$42303. 1144.7x for y - 2277953 + 35834 = 42303 1144.7x - 2242119 = 42303 1144.7x = 2284422 X = 1995.65 or 1996. The Median income was $42,303 for year 1996. Friday, February 8, 2013 at 4:56pm college chem if the length of one side of a square is 12.0, what is the perimeter of the square? Friday, February 8, 2013 at 11:57am College Algebra just solve 16t^2 = 128 t^2 = 8 t = √8 = 2√2 Friday, February 8, 2013 at 11:16am College Algebra w(2w+6) = 72 2w^2 + 6w - 72 = 0 w^2 + 3w - 36 = 0 w = 3/2 (√17 - 1) Odd answer. These usually involve integers. Typo? Friday, February 8, 2013 at 11:15am College Algebra Pythagorean Theorem: x^2 + 12^2 = 28^2 Solve for x. Friday, February 8, 2013 at 10:40am english (theses writing) hello! :) I am a freshman college student and I am looking for a thesis topic about civil engineering.Can you give me a topic on my thesis about civil engineering? thanks :) Friday, February 8, 2013 at 7:39am College Algebra The base of a 28 foot ladder is placed 12 feet from the house. How far up house does the ladder reach? (The answer to the nearest tenth of a foot Friday, February 8, 2013 at 12:28am College Algebra The length of a rectangular carpet is 6 feet greater than twice its width. If the area is 72 square feet, find the carpet's length and width. Friday, February 8, 2013 at 12:13am College Algebra The distance, d, in feet that an object falls in t seconds is modeled by the formula d=16t(2) if you dive from a height of 128 feet, how long will it take to hit the water? (answer may be in simplified radical form). Friday, February 8, 2013 at 12:08am Math Quantitative data can be divided into smaller parts, where categorical data cannot. They are all correct except years of education. If someone was attending the first semester of college, would you say he had 12.25 years of education? Thursday, February 7, 2013 at 5:41pm college algebra The question was: Determine when the median income was$42,303 Your answer does not fit the question. You started off right (I think). The posting is sort of garbled. 42303 = 1144.7(x-1990) + 35834 1144.7(x-1990) = 42303-35834 1144.7(x-1990) = 6469 x-1990 = 5.65 x = 1995.65 so...
Thursday, February 7, 2013 at 11:53am

urgent urgent urgent
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical process that occurred ...
Thursday, February 7, 2013 at 11:42am

college algebra
if the numbers are a and b, a-b is positive if a>b a-b is negative is a<b
Thursday, February 7, 2013 at 11:41am

college physics
A person desires to reach a point that is 5.20 km from her present location and in a direction that is 43° north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she could travel to reach her ...
Thursday, February 7, 2013 at 11:05am

college physics
a rice grain is sitting on top of an apple, it slides down. where does it come off the apple? assuming the apple is a frictionless sphere. Find the angle with respect to the vertical diameter of the apple.
Thursday, February 7, 2013 at 2:57am

college algebra
I you are given two real numbers, explain how to determine which one is lesser.
Thursday, February 7, 2013 at 1:09am

college algebra
Median family income in country x between 1990 and 1999 can be modeled by f(x)=1144.7(x-1990)+35,834 where x is the year. Determine the median income was $42,303. I did it this way don't know if it's right f(x)=1144.7(x-1990)+35,834 42,303-35,834 = 1144.7 - (x-1990) + ... Wednesday, February 6, 2013 at 11:26pm college algebra Median family income in country x between 1990 and 1999 can be modeled by f(x)=1144.7(x-1990)+35,834 where x is the year. Determine the median income was$42,303. I did it this way don't know if it's right f(x)=1144.7(x-1990)+35,834 42,303-35,834 = 1144.7 - (x-1990) + ...
Wednesday, February 6, 2013 at 11:03pm

urgent urgent urgent
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the muscle go through
Wednesday, February 6, 2013 at 9:11pm

college
this is what i believe about myself as i was grown up and what i believe
Wednesday, February 6, 2013 at 7:45pm

college algebra
from y = 5 - 2x y = -2x + 5 , (why did you switch the signs in yours ???) the slope is -2 so the slope of the new line is 1/2 y = (1/2)x + b sub in the point (4,1) 4 = (1/2)(1) + b 4 - 1/2 = b b = 7/2 new equation is y = (1/2)x + 7/2
Wednesday, February 6, 2013 at 7:35pm

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