Thursday

April 28, 2016
Total # Posts: 868

**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**

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*

**math**

you first find the number pattern
*September 15, 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*

**Math**

So mixing them up doesn't make it another option? I'm assuming that this problem is a trick question.
*May 6, 2011*

**Math**

But I don't know for example,say you labeled each tile A, B, and C. Is there an option to lay them in different orders, or does that not matter because they are all the same tile? Also is another way, to lay it down as a coloum instead of a row?
*May 6, 2011*