Thursday

August 25, 2016
Total # Posts: 871

**math/algebra**

Divide: 2x-6/21 divided by 5x-15/12 I have worked to this point and now I'm stuck. 2(x-3)/7 * 4/5(x-5) and I don't know where to go from here. Can anyone point me in the right direction? No. the second term in th denominator factors to 5(x-3), which then will divide ...
*August 19, 2007*

**math/algebra**

Division: x^2 + 2x - 15over 4x^2 divided by x^2 -25 over 2x-10 Will someone show me the steps to work this problem, I have looked and looked at my book but it still makes no sense to me. Help. First, change the division to the reciprocal of muliplication. Check this, it ...
*August 19, 2007*

**math/algebra**

Is this correct -3a^2b/35a^5 * 14a^3b^2/-9b^4= -42ab/-315a^5b^4 you need to simplify and i belive your exponents on your variables are wrong _______________________________________ try again *** i got (2a^3)/(15b^2) sorry i forgot something, looking back at my work I now get...
*August 19, 2007*

**math/algebra**

can someone check my work? x^2 = 22 xãx-22 if x^2 is 22, then x is +- sqrt 22
*August 19, 2007*

**math/algebra**

cab someone help me? solve by quadratic formula 3x^2 - 5x = -1 I cannot come up with the -5x and get the 1 for factoring. put it into standard form: 3x^2 -5x +1=0 a= 3 b= -5 c=1 x= (5 +- sqrt (25 -12)/6
*August 19, 2007*

**math**

someone told me how to use the computer keys to make the square root sign and I lost the info, could someone tell me again? alt 251 alt 251
*August 18, 2007*

**math/algebra**

can someone check my answer: 3ã486 my answer is 27ã6 if not show me where I went wrong please you are right. (did you see my post to you earlier on how to create square root sign? Does it not work for you?) 3√486 = 3√81*√6 =27√6
*July 29, 2007*

**amth/algebra**

can someone help me with simplification: ã20/5 - 1/ã5 my first answer is 1/ã5 my second answer is 10 -ã5/5 but the answere I have to choose from are: (a) ã20 - 5ã5/ã5 (b) ã...
*July 29, 2007*

**math/algebra**

simplify. ã20/5 - 1/ã5 I come up with 2 different answers (1) 2 ã5/5 - 1/ã5 2ã5 - 1ã5 1/ã5 or (2) ã20/5 - 1/ã5 = ã(4 ) - 1/ã5 2 - 1/&#...
*July 29, 2007*

**cultural diversity**

considering racial imbalances in education, the economy, family life, housing, criminal justice, health acre, and politics. Of these societal challenges facing modern african american, which do you think are most difficult to overcome and why? http://www.jiskha.com/search/...
*July 26, 2007*

**math/algebra**

can someone check me and see if this is correct. ã(4x+1) + 3 = 0 ã(4x+1)= -3 ã(4x+1).2= -3.2 4x + 1 = 9 4x = 9 - 1 4x = 8 x = -2 not sure what your symbol ã means but it appears like you mean square root. If that is the case then ...
*July 25, 2007*

**MATH/ALGEBRA**

SOLVE: ã(4x+ 5) + 1 = 0 ã(4x+ 5)= -1 (ã(4x+ 5))squared= (-1)squared 4x + 5 = 1 I know I solve for x I get that x = 1 but my book states that x = -1 Please show me how this is true I don't understand what the term ã means...
*July 24, 2007*

**math/algebra**

I keep confusing myself. Please check and show me where I am mixed up. (8+ ã48)/4 = (8+ ã(2 .24))/4 =1+2ã6 where am I missing it?
*July 22, 2007*

**math/algebra**

I have a triangle one side = 3 side 2 = square root5 - square root 3 side 3 = square root 5 + square root 3 I can get the answer 3 and I know I am missing the square root part of the equation can you help me by showing how this problem is worked so I can see where I am missing...
*July 22, 2007*

**written communication**

Discuss how you would approach creating a negative messagefor a superior (such as a manager at work or an instructor) versus creating a message for a colleague, subordinate, or fellow student. http://www.jiskha.com/search/search.cgi?query=negative+message+for+a+superior
*July 17, 2007*

**written communication**

what kinds of unwanted reactions might you get from readers of your messages? What steps would you take to ensure that the purpose of your message (whether informative, negative, or persuasive ) is converyed to your readers? I can think of several unwanted reactions. People ...
*July 16, 2007*

**Computers**

I am trying to do a formula/function in excel 2003 for this: IF(Qtr Growth Rate<0, Revenue*(Qtr Cost Rate + Extra), Revenue*Qtr Cost Rate) Qtr Growth Rate is B10 Revenue is B4 Qtr Cost Rate is B11 Extra is B12 I keep coming up with the wrong total and this is where I think ...
*June 29, 2007*

**math part (c)**

4.The total of your calculations would equal the amount Sally has contributed for the first two years. As we already know, the company would match employee 401K contributions up to 5% of the gross salary. What is the total amount contributed by the company to Sally’s 401-...
*June 24, 2007*

**maTH part (b)**

Part (b) 1.Knowing that Sally put 2% of her salary into her 401K during her first two years, how much has Sally contributed to her 401-K plan on the first year? 2.What is Sally’s gross salary on the 2nd year, after a 3.5% raise? 3.Knowing that Sally put 2% of her salary ...
*June 24, 2007*

**Math Part 2**

a.Execute the research necessary to understand the basic structure of a 401K plan. Write a brief summary of your findings. b.How much did Advanced Ideas, Inc. put into Sally’s 401K in her first two years? c.How much will Sally contribute to her own 401K during her third ...
*June 24, 2007*

**mATH part 1**

Sally Rogers, an employee of Advanced Ideas, Inc. has a gross salary of $45,000 per year. Her company will match employee 401K contributions up to 5% of the gross salary. Due to personal financial constraints, Sally is only able to put 2% of her salary into her 401K during her...
*June 24, 2007*

**math 2ND PART (B)**

Part (b) 1.If next year the number of accounts increases by 20%, the number of technicians has to be increased by 20%, too. How many new technicians have to be hired next year? Please note: your result has to be rounded to the whole number. 2.What will be the total number of ...
*June 24, 2007*

**math for 1st part (a)**

Part (a) 1.If the ratio of accounts-to-support technicians is 5:1, how many accounts are supported by each technician? 2.If there are currently 8 technicians on staff, how many accounts total are they supporting now? Please see the previous answer. 40
*June 24, 2007*

**math 3rd part**

b.The company is projecting a 20% growth each year for the next four years. How many technicians should the company’s Human Resource Manager plan to hire in each of the next four years? 1st year: 8 x .2 = 1.6 2nd year: 9.6 x .2 = ? Continue this pattern for the next 3 ...
*June 24, 2007*

**math Ist part**

A corporate software development firm has a staff of online support technicians available 24 hours a day. They advertise that one of the advantages of using their company is that the ratio of accounts-to-support technicians is 5:1. Your question is not complete.
*June 24, 2007*

**math**

Sally Rogers, an employee of Advanced Ideas, Inc. has a gross salary of $45,000 per year. Her company will match employee 401K contributions up to 5% of the gross salary. Due to personal financial constraints, Sally is only able to put 2% of her salary into her 401K during her...
*June 24, 2007*

**Math**

A corporate software development firm has a staff of online support technicians available 24 hours a day. They advertise that one of the advantages of using their company is that the ratio of accounts-to-support technicians is 5:1. This year they have eight technicians on ...
*June 24, 2007*

**mathI**

I crossed out all the prime numbers i need to fine the largest prime number and this guestion A movie theater runs two documentary films continuously. One documentary runs for 40 minutes and a second documentary runs for 60 minutes. Both movies begin at 3:00 p.m. When will the...
*June 24, 2007*

**math**

Determine which tow equations represent perpendicular line. (a) y= 3/8 x -4 (b) y= 4x - 3/8 (c) y= - 1/4 x + 3/8 (d) y= 1/4 x - 3/8 b and c. Perpendicular lines have slopes which are negative reciprocals of each other. So 4 and -1/4 work.
*May 26, 2007*

**math**

what was the percentage increase in the age 75+ population of europe from 1970 (22,762) to 1995 (38,139) PercentIncreas= (38139-22762)/22762 *100
*May 26, 2007*

**Matt**

plot the point with coordinates (-4, 3). Help I'm not really sure what you are asking, but I hope some of this helps: The horizontal line is the x axis. You have to plot -4 on that axis, because -4 is the x coordinate. The vertical line is the y axis. Plot 3, the y ...
*May 26, 2007*

**math**

An employee who produces x units per hour earsn an hourly wage of y=0.70x + 12( in dollars). Find the hourly wage for an employee who produces 18 units per hour. substitute x=18 and evaluate. let me know what you got y- 0.70(18) + 12 y = 12.60 + 12 y = 24.60
*May 24, 2007*

**math**

Help I can go this far and then lost. In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 items will cost $10,000to produce and the ...
*May 24, 2007*

**Mat**

1) L has y intercept (0, -3) and is parrallel to the line with equation 2/3x + 1 2) L has y intercept (0, 2) and is perpendicular to the line with equation 2x -3y = 6 1) you know the slope, and intercept 2) Put the equation in slope intercept form.
*May 24, 2007*

**mat**

Write the equation of the line passing throught each of the given pairs of points. Write your result in slope-intercept form. (2, 3) and (2 , 4) I will be happy to critique your thinking on this. Notice in the pair of points the x is constant, indicating a vertical line.
*May 24, 2007*

**mat**

write the equation of the line passing through each of the given points with the indicated slope. give your results in slope-intercept form. (0, 5) , m = 1/4
*May 23, 2007*

**Mat**

write the equation of the line passing through each of the given pairs of points. write yourresults in slope-interceptformwhere possible. (-1, 3) and (4, -2) get your slope I got m =(-2-3)/(4+1) = -1 pick one of the points and m=-1 to sub into y = mx + b, solve for b and ...
*May 23, 2007*

**algebra**

how would I graph the following slope -2: y-intercept: (0, 4) Start at the y intercept, then draw a line for every one it goes to the right, it goes down two.
*May 23, 2007*

**algebra**

find the slope of the line through the folling pairs of points. (-5, -3) and (-5,2) Since the two points are on a vertical line (how does one know that?), the slope is infinite.
*May 19, 2007*

**algebra**

The length of a rectangular garden is 5 ft less than 3 times its width. If the perimeter of the garden is 22 ft, find the dimensions of the garden. I will start you off with... let the width be w, then the length is 3w - 5 I am pretty sure you can form the equation from there ...
*May 13, 2007*

**mat 116/algebra**

A cylinder has a radius of 5 in. If the volume of the cylinder is 250ƒà in.3, what is the height of the cylinder? [Hint: The volume of a cylinder is given by V = ƒàr2h.] I think I wrote it wrong the first time. The volume of a cylinder is pi r^2 h. Your...
*May 13, 2007*

**Mat 116/algebra**

A cylinder has a radius of 5 in. If the volume of the cylinder is 250 ¦Ðr¡¼in¡½^3, what is the height of the cylinder? Volume cylinder is AreaBase*height where area of the base is PI*r^2 Volume=PI*r^2 * h solve for h.
*May 13, 2007*

**Mat 116-Algerba 1a**

-3(x +8) = -6 I keep getting it wrong. Help x+8 = -6/-3 - = 2 x = -6 compare the numbers -2.002 and -2.02 using an inequality. compare the numbers -2.002 and -2.02 using an inequality.it is 2 because there is no diferrence!
*May 13, 2007*

**calculus**

relative extrema x^3 + 1/2x^2 - 2x + 5 Ok I have 3x^2 + x - 2 = 0 Am I on the right track? I think i know why I kept on asking for help with these pribelms. I forgot the step of factoring. Please check... 3x^2 + x - 2 = 0 (3x-2)(x+1)=0 x=2/3, x=-1 Correct. Nice job. If you ...
*March 9, 2007*

**Calculus**

relative extrema x^4-2x^2+5 so far I know how to find the derivative which is 4x^3-2x now I am stuck... Please help Huh? 4x^3-2x=0 2x(2x^2-1)=0 and what are the roots? I will give you a hint: one is x=0 The other two are in the second parenthesis. Is it x-1 and x=-1 I did a ...
*March 9, 2007*

**calculus**

I am having trouble with this problem also derivative differentiate f(x)=(3-x)^4(x+5)^3 so far I have 4(3-x(x+5)^3+3(x+5)(3-x) Not quite right. Treat it as d/dx[u(x) + v(x)] = u dv/dx + v du/dx u(x) = (3-x)^4 v(x) = (x+5)^3 du/dx = -4(3-x))^3 (using the chain rule) dv/dx = 3(x...
*March 1, 2007*

**calculus**

derivatives differentiate y=x^7/3 So far I have Y=7/3X Is this all there is to this problem? Using the power rule, you bring the exponent down, just like you did. Then, you subtract one from the given exponent to get the new exponent. 7/3 - 1 (which is 3/3) gives you a new ...
*March 1, 2007*

**Calculus**

Derivative Differentiate f(x)=(5x-4)^2 There are two ways to do this: (1) let u = 5x-4, and use the "chain rule", df/dx = df/du * du/dx OR (2) expand the polynomial to f(x) = 25 x^2 -40x + 16 and differentialte it term-by-term. You will get the same answer either way...
*February 26, 2007*

**Finance**

The Carter Company's bond mature in 10 years have a par value of 1,000 and an annual coupon payment of $80. The market interest rate for the bond is 9%. What is the price of these bonds The coupon rate on the bond, (interest/principal at maturity) = 8% Since prevailing ...
*February 14, 2007*

**math**

Given: f(x)=x^2-1 Find a simplified form of the difference quotient. I will be happy to critique your thinking. I am not going to do it for you. The link I gave you shows you how. Is it set up like this 1(x+h)^2 - 1(x)
*February 9, 2007*

**Calculus**

Given: F(x)= 5x^2 a) find a simplified form of the difference quotient b) find the average rate of change (difference quotient)x=4, h=2 Please help... http://www.mathwords.com/d/difference_quotient.htm Ok I went to this site and I saw the formula, how do I set up a problem ...
*February 9, 2007*

**algebra**

This one really threw me off... find the slope of the line containing the points (x, 2x) and (x + h, 2(x +h)) You have to first find the slope, which is change in y over change in x: {[2(x-h)]-2x}/[(x+h)-x] (2x-2h-2x)/(x+h-x) -2h/h m=-2. i don't have an anwser but i need ...
*January 23, 2007*

**algebra**

find the equation of a line with slope 4/5 and y-intercept (0,-7) Do I still use the formula y=mx+b? Yes. Let me know what you come up with and I'll let you know if you are correct. So far I came up with y+7 = 4/5(x-0) Now I am stuck... OK, you could do it that way, and ...
*January 23, 2007*

**algebra**

find the y-intercept and the slope x + 2y -3 =0 You first have to get this into slope-intercept form: 2y=-x+3 y=-0.5x+1.5 This form is y=mx+b, where m is the slope and b is the y-intercept.
*January 23, 2007*

**PLEASE SOLVE MY RIDDLE**

A diller, A dollar, A ten o'clock scholar, what makes you come so soon? You used to come at ten o'clock, But now you come at noon.
*December 24, 2006*

**math**

3x-5/6=7x+4/4 If you mean (3x-5)/6= (7x+4)/4 , then 12 x - 20 = 42 x + 24 and you can take it from there. If you mean 3x - 5/6 = 7x + 4/4, then the answer will be different. Please use parentheses to clarify ambiguous algebraic statements such as the one you typed.
*December 22, 2006*

**algebra**

e^3x-5=17 Dee: You need to use closure marks. It is impossible to decipher your questions without them. Is this: e^(3x-5)=17 e3x-5=17 or e^(3x)-5 =17 e3x-5 =17 Sorry for the confusion. It is e^(3x-5)=17 e^(3x-5)=17 Take the ln (log base e) of each side. 3x-5= ln17 3x= ln 17 + ...
*November 27, 2006*

**algebra**

solve 4^3x-4=32^x+2 Please help! Do you mean 4^(3x) -4 = 32^x +2 ? yes If that is really what you mean, I cannot get a closed-form solution for you. You would have to solve it by trial-and-error or graphical means. If, on the other hand, you mean 4^(3x-4)=32^(x+2), then take ...
*November 26, 2006*

**algebra**

solve 4^-x=64 Please help -x log 4 = log 64 -x = log 64/log 4 = 3 x = -3
*November 26, 2006*

**physics**

A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
*November 26, 2006*

**physics**

An interstellar ship has a mass of 1.20 X10^6 kg and is initially at rest relative to a star system. a) what constant acceleration is needed to ring the ship up to a speed of .10c (where c is the speed of light, 3.0X10^8 m/s) relative to the star system in 3 days? b) what is ...
*November 26, 2006*

**physics**

Imagine a landing carft approaching the surface of Callisto, one of Jupiture's moons. If the engine provides an upward force (thrust) of 3260 N, the craft descends at constant speed; if the engine provides only 2200 N the craft accelerates downward at .39 m/s^2. a) What is...
*November 26, 2006*

**physics**

A 40 kg skier comes directly down a frictionless ski slope that is inclined at an angle of 10 degrees with the horizontal while a strong wind blows parallel to teh slope. Determine the magnitude and diercection of the force of the wind on the skier id a) magnitude of the skier...
*November 25, 2006*

**physics**

Tarzan wights 820N, swings from a cliff at the end of a 20m vine that hangs from a high tree limb and initially makes an angle of 22 degrees with the vertical. Immediately after Tarzan steps off the cliff the tension in the cine is 760N. Choose a coordinate system for which ...
*November 25, 2006*

**eth**

how do you think an average american's perceptions of each group are created? by there upbringing and family teaching Our perceptions of each ethnic group are influenced by our culture, our parents, and our own personal experiences. I suspect there's an underlying ...
*November 5, 2006*

**Stats**

Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
*November 3, 2006*

**Stats**

Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
*October 29, 2006*

**word unscramble**

a true temper
*September 28, 2006*

**social studies**

What are FIVE CITIES that run along the Mississippi River? the state capital and alabamma help me on this on this paper Since this is not my area of expertise, I searched Google under the key words "'Mississippi River' cities" to get these possible sources: (...
*September 25, 2006*

**orientalism of muslim and arab american**

i think I am going to lose my A with this question because I can't find anything on it!
*August 6, 2006*