Tuesday
September 2, 2014

Posts by Lee


Total # Posts: 765

ALGEBRA
65/100 had iPhones of those 65-30 had car too so 35 only had iPhone 40/100 had cars of those 40-30 had iPhone too so 10 only had car 35 + 10 = 45 only had iPhone OR car
November 20, 2011

algebra
Figure out how many feet in a mile we will call that x figure out how many seconds in an hour we will call that y 20y=how many feet in an hour and divide by x that will give you mph
November 20, 2011

maths
You find two numbers whos product is your surd. Trying to get one factor to be the square of a number. For example if you want to simplify a surd of 75 you would choose 25x3. you write it by using square root symbol(srs) in front of (25x3)= srs 25x srs 3 which equals 5x(srs)3 ...
November 20, 2011

Pre-Calculus
Thank you. You helped greatly.
November 20, 2011

Pre-Calculus
I'm having a had time with this problem. Could you please help with step by step resolution? e^-x / e^-1 + 3 dx Thank you..
November 20, 2011

math
A negative sign outside of parenthesis is telling you to multiply by -1 which makes positive numbers negative and negative numbers positive. So -y+25
November 19, 2011

math
Company A $5+$1 per pound Company B $3 + 1.50 per pound 27. 3+1.50x=5+1x 1.50x=2+x .50x=2 X=4 28. 6 lb package with company a $5+($1x6)=$11 6lb package with company b $3+($1.50x6)=$3+$9=$12 Company A charges less. You save $1
November 19, 2011

math
Can't illustrate in Jiskha. Should look like 7 red cubes then 3 blue cubes in a line.
November 18, 2011

math
Need the width
November 18, 2011

Algebra 2
A=2*3.14*pw A=22cm squared w=2 solve for p 222cm=2*3.14p*2 222cm=6.28p*2 484cm=12.56p 242=6.28p P=38.53cm
November 17, 2011

math
Bayside insurance offers two health plans. Under Plan A Giselle would pay the first $80 of her medical bills, plus 30% of the rest. Under Plan B Giselle would pay the first $140 but only 25% of the rest. For what amount of medical bills would plan B save Giselle money. Assume ...
November 17, 2011

math
78:23
November 17, 2011

math
What is the cost in dollars to steam clean a room W yards wide and L yards long if the steam cleaners charge 10 cents per square foot? (3W x 3L) x .10
November 17, 2011

Math
Simplify -1+9(5-3m) -1+45-27m 44-27m Solve 10=10-2m 10+2m=10 2m=0 M=0 Solve: 4b<_-2/3 b<_-2/3*1/4 b<_-1/6 Simplify 6v-8-6v+16 8
November 17, 2011

algebra
32.80-(32.80*3/4)= 32.80-24.60= $8.20
November 17, 2011

English; conmas
Combine flour, shortening, pecans, and cold water to make a tasty pie crust.
November 16, 2011

math
Both are correct because both 2 and 4 are multiples of 8 so any multiple of 8 will be divisible by 4 and 2
November 16, 2011

Math
2(20)+2(25)=90 yd
November 16, 2011

algerbra 1
The decimal notation for the fraction -9/16 is -0.56 Round to the nearest hundredth Solve 5x+8x=78 =13x=78 The solution is x= 6 Simplify the answer. Type an integer of decimal. Solve using the addition principle 9.5=p-9.2 p=9.5+9.2 The solution is p= 18.7
November 16, 2011

Algebra
-(5x+5)-4+8x -5x-5-4+8x 3x-9 x-3
November 16, 2011

math
Plan A- 80.00 +25% Plan B-90.00 +20% 80+.25x>90+.20x .05x>10 x>200
November 16, 2011

History
How does barter and commodity money compare to todays paper and coin money? please help
November 16, 2011

algerbra 1
a. What percentage of the total monthly budget is spent on labor? 1,835/5,000= 36.7% b. What percentage of the total monthly budget is spent on miscellaneous items? 1,015/5,000=20.3% c. How much do materials cost monthly? 5,000*.18= $900 d. How much do rent and utilities cost ...
November 16, 2011

algerbra 1
a. Rewrite the formula to solve for C. P+c=R C=r-p b. Imagine your profit for 1 day is $1,281, and the cost of running the business for the day is $1,463. What is the revenue for that day? Explain your answer. R=P+C R=1,281+1,463 R= $2744 You can explain the answer
November 16, 2011

Algerbra1
1.You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a.What ...
November 16, 2011

algebra
8y = 4y-36 4y=-36 y=9
November 16, 2011

English
Synonym Antonym 1) bluster threaten protect 2) commentary explanation hushed 3) facet surface sink 4) synopsis outline expand 5) tarry dawdle fast 6) setback hinder prompt 7) fidelity loyalty unfaithfulness
November 16, 2011

math
1/8= 3/24= 1 slice John 1/3= 8/24= 2 2/3 slices Maria 1/4= 6/24= 2 slices
November 16, 2011

math
x<4
November 16, 2011

math
Shelley 1/10 of ½ eligible and 1/20 of all eligible Daley 2/8 of ½ eligible and 2/16 of all eligible Shelley got 1/10 or .1 votes Daley got 2/8 or .25 Daley got the most votes
November 15, 2011

Algera
If x is divisible by 4,5,20. Which of the following statement must also be divisible by 4, 5, 20? x+4 x+5 x+10 x+20
November 15, 2011

MATH
1. 5/8+5/6= 15/24+20/24=35/24 2. 2 3/5+4 4/5= 6 7/5= 7 2/5 3. 13 1/2+7 2/3=13 3/6+7 4/6=20 7/6= 21 1/6 4. 3/8 - 3/8 = 0
November 15, 2011

math
3/6 (1/2)walk 2/6 (1/3)take bus 1/6 remainder
November 15, 2011

geometry
16 on each 30 foot side and 9 on each 20 foot side for a total of 50 posts.
November 15, 2011

math
Mary is 14 and Peter is 23 To figure out Peter's age: x=Peter's age 2/3(x-2)= 1/2(x+5) solve for x 2/3x - 4/3 = 1/2x + 5/2 2/3x-1/2x = 5/2+4/3 4/6x-3/6x=15/6+8/6 1/6x=23/6 X=23/6 / 1/6 X=23
November 15, 2011

algebra
I am on a limited budget for a long weekend to Maine. I have $100 and I have budgeted 40% for gas. My car is on empty and it gets 20 MPG. The average price of gas is $3.00 per gallon and the round trip to Maine is 300 miles. Do I have enough in my budget for Maine or am I ...
November 15, 2011

Communication Skills
What issues are involved in this encounter? The issues involved in this encounter are facts important to the case. The facts: Charlotte is 43 and a mother of two Husband has been diagnosed with terminal cancer Husband’s life insurance only good for 12 months of sickness ...
November 11, 2011

math2
The common denominator of 1/3 and 4/5 is 15 So 1/3 of project or 5/15 is remaining On Monday Dan completed 4/5 of remaining or 4/15 of entire project. I think of it this way, if there are 15 pieces to complete As of Monday 10 pieces were already complete which left 5 If Dan ...
November 10, 2011

calculus
Suppose the area of a square is increasing with time.At the time when the side of the square is 4 meters and the change in area is 2 sq meters per min, find the change in the length of the side of the square.
November 6, 2011

calculus
the equation of motion is given for a particle, where s is in meters and t is in seconds. find the acceleration after 2.5 seconds.
October 30, 2011

calculus
find the tangent to the ellipse £¨x^2/4)+(y^2/4£©=1 at the point (1,rad(3)).
October 30, 2011

calculus
the curve with equation 2(x^2+y^2)^2=9(x^2-y^2) is called a lemniscate. find the points on the lemniscate where the tangent is horizontal.
October 30, 2011

calculus
find y' by implicit differentiation: 5cos(x)*sin(y)=13
October 30, 2011

calculus
find d/dx (sin^(21)x *cos21x)
October 30, 2011

calculus
the limit represents the derivative of some function f at some number a. state f and a. lim (sin(pai/2 + t)-1)/t t->0
October 30, 2011

calculus
The position function of a particle is given by s=t^3-3t^2-6t, t > =0. when does the particle reach a velocity of 66 m/s?
October 30, 2011

calculus
find equations of the tangent lines to the curve y=x/(x+5) that pass through the point (2,7).
October 30, 2011

probability
This is exactly how the question is written on the test. Does that mean it can't be answered since we don't have part of the problem?
October 27, 2011

Math
I can't figure out this pattern: 1, 1, 4, 3, 9, 6, 16, 10, 25, 15, __, __, __, __
October 25, 2011

math
Thanks. That's what I thought too.
October 24, 2011

math
Every week Bradley doubles his card collection. He started with 2 cards. How many cards will Bradley have after 6 weeks?
October 24, 2011

Science
I need help with the experimental design of my project. I am testing to see if the the position (chin height, chest height, over head) of the basketball affects the number of shots that go in the basket. What is the independent variable and what are the levels of the ...
October 22, 2011

Algebra
I don't get this.
October 13, 2011

ncu
a health care professional wishes to estimate the birth weight of infants how large a sample must she select to be 90% confident that the true mean is within 6 ounces of e sample mean. the standard deviation of birth weights is is known to be 8 ounces
October 6, 2011

Chemistry
What are the differences between "wet gases" and "dry gases?" Wet gas - contains H2O whereas Dry gas - does not contain H2O? Dry gas only contain Hydrogen?
September 5, 2011

Algerbra
A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x x = 2 y = 6 answer 3 please explain!
August 30, 2011

Algerbra Fixed
A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x
August 30, 2011

algebra
A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x
August 30, 2011

algebra
2xy + 6 -------- 3y -4z if x= 2, y=6 anwser 3 this is a question from in class i dont get. Could you explain to to me
August 30, 2011

engineering
what is civil engineering?
August 21, 2011

algebra
Find the y intercept for the equation -2x+2=4
August 19, 2011

Calculus
I'm studying infinite series and am really struggling with memorizing all the tests for convergence in my book, there's like 10 of them. I don't think I'm going to be successful in memorizing all of them. I will never be asked in my course to use a specific ...
August 17, 2011

Math
Is this a true statement and what are the steps to figure it out? 5x-3y=15:(0,5)
August 17, 2011

Algebra
Please help me One bowling charges $5.50 for shoe rental plus $2.50 per game. A second bowling alley charges $4.00 for shoe rental plus $3.00 per game. If one person rents a pair of shoes to bowl, how many games should they bowl to make the first bowling alley cheaper than the...
August 16, 2011

statistics
Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer to the thousandths place.
August 2, 2011

psychology
I need help clarifying something. I was under the impression that Human service takes a generalist approach, but in a recent discussion, I was told that it is important for a therapist, clinician ect.to choose a theoretical Framework. Why is this?
July 29, 2011

MATLAB
nevermind
July 21, 2011

MATLAB
I got another MATLAB question that I seem to be struggling with. Use two separate input statements to prompt a user to enter his or her first and last names. Use the disp function to display those names on one line. (You'll need to combine the names and some spaces into a ...
July 21, 2011

Computer Science - MATLAB
thanks mathmate. It's way above my head to. I got another question Consider the following two equations: x^2 + y^2 = 42 x + 3y + 2y^2 = 6 Define a symbolic equation for each, and solve it by using MATLAB's symbolic capability. Could you solve these equations by using ...
July 20, 2011

math
I'm not exactly sure what your asking for or what the question is? I assume your trying to solve for the derivative? Did you try plugging it into wolfram alpha an clicking on show steps? That always works. Well not always, but it defiantly well if interperting (e^x-e^-x)/(...
July 20, 2011

Computer Science - MATLAB
This is the tutorial it's making a reference to h t t p : / / w w w . m a t h w o r k s . c o m / h e l p / t e c h d o c / r e f / r e d u c e v o l u m e . h t m l at least I think it is >_>
July 20, 2011

Computer Science - MATLAB
Create a stacked contour plot of the MRI data, showing the first, eight, and twelfth layer of the data. An MRI visualization example is shown in the help tutorial. Copy and paste the commands into an M-file and run the example. Be sure to add the clf command before drawing ...
July 20, 2011

Computer Science - MATLAB
got it <_< forgot the dot and got rid of the axis tight disp('Problem 13.11') x=-2*pi:pi/50:2*pi; y=sin(x); [X,Y]=meshgrid(x,y); z=sin(X)*cos(Y); h=surf(z); set(gca,'nextplot','replacechildren'); shading interp colormap(jet) for a=0:pi/100:8.25*pi...
July 20, 2011

Computer Science - MATLAB
Same thing. I wounder if I'm suppose to be using the surfz function and not some other 3 dimensional plotting function?
July 20, 2011

Computer Science - MATLAB
I tried both and both results leave me with the same result, It just flashes real quick and then turns white... I even tried a=0:pi/1000000000:8*pi, it stays for a little bit longer but then turns white.... I think it's an issue with something else... what I'm not ...
July 20, 2011

Computer Science - MATLAB
Thanks MathMate. Print plotting sounds awful O_O. What you suggested was correct and this code worked disp('Problem 13.9') x=[-2*pi:.00001*pi:2*pi]; a=0; y=sin(x-a); g=plot(x,y); title(sprintf('sin(x-%.2f)\n',a)) grid on; set(g,'EraseMode','xor'...
July 20, 2011

algebra
=x^5-4x^3+9x^2-2x^3+8x-18 simplify = x^5-6x^3+9x^2+8x-18
July 19, 2011

Writing
What are the three arguments in a nut shell?
July 19, 2011

Calculus
The number of people taking the bus at price p dollars per ticket is given by x=5000(5-p)^1/2. For what value of P is the demand unitary?
July 19, 2011

Computer Science - MATLAB
also note that i don't have pause there at the end of my loop i just added that in there when i was trying to slow down the animation to see if something was wrong but nothing was found
July 19, 2011

Computer Science - MATLAB
In a problem I had to create a animation of the function sin(x-a) were a ranged from 0 to 8pi Code: x=[-2*pi:.00001*pi:2*pi]; a=0; y=sin(x-a); g=plot(x,y); grid on; title('sin(x-0)') set(g,'EraseMode','xor') while a<=8*pi a=a+.1*pi; y=sin(x-a); set(g...
July 19, 2011

Thank You MathMate
Thank you for assisting me with my MATLAB question. If I posted this on the actual question you never would of seen it. What you suggested to do worked and produced the results I was suppose to get. I wanted to say thank you. And a grid_size of 500 seems to produce more stable...
July 19, 2011

Programing
apparently I was skipped by accident 13.2 A quadratic Julia set has the form z(n+1)=z(n)^2+c The special case where c=-.123+.745i is called Douday's rabbit fractal. Follow example 13.1, and create an image using this value of c. For the Madelbrot image, we started with all...
July 17, 2011

MATLAB
13.2 A quadratic Julia set has the form z(n+1)=z(n)^2+c The special case where c=-.123+.745i is called Douday's rabbit fractal. Follow example 13.1, and create an image using this value of c. For the Madelbrot image, we started with all z-values equal to 0. You'll need...
July 16, 2011

algebra 2
f^(-1)(x) = (ln(x-2))/(ln(10))
July 16, 2011

Math
120
July 16, 2011

world regional geography
Not the Dutch!
July 11, 2011

algebra II
How many solutions does the equation x^2 - 2x - 2 = 0 have?
July 3, 2011

Algebra II
Simplify (2x^-2y^2/3xz^-2) times (4xzy^-3/9xyz)^-1
July 1, 2011

Calculus
find the rate of change dy/dx for y=x(1-x); x=-1
June 26, 2011

Algebra
Solve the system of equations by graphing. Then classify the system. x+y=11 x-y=-5
June 7, 2011

physics
If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t. 

How many seconds does it take for the ball to reach its maximum height, and what is this height?
May 22, 2011

literature
which of the following terms descrides the period of the 1920s?
May 17, 2011

Lit Class
not d
May 16, 2011

algebra
Thanks for the input.
May 15, 2011

algebra
If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a cost decrease of four times?
May 15, 2011

Chemistry
A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius. a) what is the molar mass of the gas? b) if the volume of the temperature are kept constant while 0.400 g of the same gas are added to that already in the container, what will the new ...
May 11, 2011

my question was answered wrong
In how many different ways can you arrange three 4x8 tiles to form a rectangle?
May 10, 2011

MATH!
The sum of two prime numbers is the prime number 89,563. Find the smaller of the two addends. I attempted the problem but I'm not sure if it is right. 89,561 is a prime number and so is 2. So is the answer 2?
May 6, 2011

Math
Okay I understand. I just wasn't sure if rearranging the tiles (putting them in a different order) would be considered another rectangle. But I get it now. With the answer being 1. Thank you.
May 6, 2011

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