Friday

December 2, 2016
Total # Posts: 102,963

**simplex method **

Maximize P=60x+50y. ? ?x+y?80 ? ?5x+10y?560 ? ?50x+20y?1600 ? ?x?0 ? ?y?0 ? ? ? ? ? ? ? Use the simplex method to solve the problem. Use s, t, and u as your slack variables for the first, second, and third inequalities respectively. Use the final simplex tableau to identify ...

*November 23, 2016*

**Calculus**

An object at the origin at time t= 0 has velocity measured in meters per second, v(t) = t/30 if 0 <= t <= 90 = 3 if 90 < t <= 108 = 9-(t/30) if 180 < t When, if ever, does the object return to the origin? t=

*November 23, 2016*

**Further mathematics**

Given that x squared + y squared = 5xy,show that; (a) 2log(x+y\?7)=log x + log y. (b). Log ( x- y\?3) = 1\2( log x + log y)

*November 23, 2016*

**pre calculus **

can you please explain what steps you take to find ||u||2 when u: <-1,7> v: <6,4>?

*November 23, 2016*

**pre calculus**

Can you explain how to find (u • v)(u + v) when u <-1, 7> and v <4, -3>

*November 23, 2016*

**Calculus**

Find all values of c that satisfy the Mean Value Theorem for integrals for f(x)= x^{2} on the interval [-3, 3]

*November 23, 2016*

**The Graphical Method**

Appericate it !

*November 23, 2016*

**Calculus**

If f(x) = integrate t^2 from x to x^2, then f'(x)= f'(-1)= Please help! I have no idea how to approach this.

*November 23, 2016*

**mathematics**

novel. x=5.

*November 23, 2016*

**mathematics**

a survey of reading habits of 100 students showed that 30 read both comics and novels. 10 read neither comics nor novels and twice as many students read comics as read novels. 1. illustrate the information on a Venn diagram. 2. how many students read only novels. 3. how many ...

*November 23, 2016*

**calculus**

how do you work out what ||u||2 is when you are given u:<-1,7> and v:<6,4>

*November 23, 2016*

**pre calculus**

Given: u <-1, 7> and v <4, -3> Find: (u • v)(u + v) ________________________________________ <25, 100> <-25, 100> <-75, -100> <75, -100>

*November 23, 2016*

**pre calculus**

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is the projection of u onto v?

*November 23, 2016*

**pre calculus**

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is ||v||2?

*November 23, 2016*

**pre calculus**

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is ||u||2?

*November 23, 2016*

**algebra~help me**

18^(4-4y)=54(sqrt(2))^(3y-2) step plz help me

*November 23, 2016*

**physics**

Does the kinetic energy of a car change more when it speeds up from 10 to 15 m/s or from 15 to 20 m/s? Explain.

*November 23, 2016*

**physics**

Does the kinetic energy of a car change more when it speeds up from 10 to 15 m/s or from 15 to 20 m/s? Explain.

*November 23, 2016*

**Economics(pls Help)**

Zoe Goggles is a deep sea underwater photographer. Her camera and lenses are valued at $4,000. There is a chance of 1/20 that she will lose her equipment on a dive over the course of the year. Her wealth, including the value of her equipment, is $30,000. Zoe’s utility ...

*November 23, 2016*

**math **

the sum of two no is 50 .the smaller no is two third of the greater no.. find the no.

*November 22, 2016*

**Physics **

A 103kg SWAT team member descends a 27.5m cable attached to a helicopter. If he wishes to reach the bottom in 3.5s, what average force should he apply to the cable?

*November 22, 2016*

**math**

Bob needs to mix 2 cups of orange juice concentrate with 3.5 cups of water to make orange juice. Bob has 6 cups of concentrate. How much orange juice can he make?

*November 22, 2016*

**Algerbra**

Write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of the given equation. (-8, -4); y=-4x+3 Write an equation for the line in slope-intercept form.

*November 22, 2016*

**Math **

A movie theater sold 3 adult tickets for every 5 children tickets. They sold 180 more children tickets than adult tickets. How many children tickets were sold and how many adult tickets were sold?

*November 22, 2016*

**Math**

How many different integers represent the sum of two or more members of the set {-4,-3,-2,-1,0,1,2,3,4}?

*November 22, 2016*

**art**

what other natural resource is mixed with these pigments to make paint? A)oils** B)graphite C)charcoal D)clay

*November 22, 2016*

**Math**

Deposit $5 weekly in 40 yrs what is the balance

*November 22, 2016*

**PHYSICS URGENT!!!**

^ you suck dick you faggot. go back to bangladesh

*November 22, 2016*

**PHYSICS URGENT!!!**

maybe you should listen in our sef005 lectures

*November 22, 2016*

**maths need help**

If Log (a+3) (base 9) - log b(base 9)= c + (1/2) and log (a-3) (base 3) + log b (base 3)=c - 1. show that a^2=9 + 27^c and find the possible values of a and b when c=1

*November 22, 2016*

**Math**

Q. a^4 - 13a + 36 Factorise

*November 22, 2016*

**PHYSICS PLEASE HELP ME**

ay that makes no sense cuz. Fix up look sharp bruv.

*November 22, 2016*

**math**

If a circle is circumscribing triangle xyz,find the radius of the triangle. Calculate the area inside the circle but outside the triangle

*November 22, 2016*

**Chemistry**

Is "a color of solution becoming less intense due to dilution" maybe evidence of chemical reaction or not?

*November 21, 2016*

**Physics**

Is it true that with buoyancy, the weight of the displaced water equals the weight of the complete object, even if only a part of the object is submerged? If so, why, since the weight of a larger object would be greater than that of a smaller one?

*November 21, 2016*

**algebra**

The revenue function for a bicycle shop is given by R(x) = x Â· p(x) R x x p x dollars where x x is the number of units sold and p(x) = 100 âˆ’ 0.4x p x 100 0 4 x is the unit price. Find the maximum revenue.

*November 21, 2016*

**dav chd**

Depress the quartic x^4 - 4x^3 + 2x^2 + 4x + 4 into w^4 - 4w^2 + 7

*November 21, 2016*

**american goverment check answers**

9.a

*November 21, 2016*

**american goverment check answers**

9. What criteria might a judge who abides by a philosophy of judicial restraint use to decide a case? (1 point) The judge would consider previous court decisions on the topic but ultimately consider the current circumstances and changes in society. The judge would not consider...

*November 21, 2016*

**social studies**

On November 12, 1815 Elizabeth Cady Stanton spokesperson for the rights of women was born in Johnston, New York. Stanton formulated the philosophical basis of the woman suffrage movement, blazing a trail many feared to follow. Stanton verbal brilliance combined with the ...

*November 21, 2016*

**science**

A librarian lifts a box of books that weighs 93N a distance of 1.5 m. How much work does he do?

*November 21, 2016*

**social studies**

On November 12, 1815 Elizabeth Cady Stanton spokesperson for the rights of women was born in Johnston, New York. Stanton formulated the philosophical basis of the woman suffrage movement, blazing a trail many feared to follow. Stanton verbal brilliance combined with the ...

*November 21, 2016*

**social studies**

1. According to the passage, what can be inferred about how Elizabeth Cady Stanton’s personal qualities affected the women’s suffrage movement? Her enthusiasm gave the movement a set of core beliefs. Her philosophical views provided the movement with a clear focus. ...

*November 21, 2016*

**algebra**

It took Joe 1 1/2 hours to walk to the mall. James did it in 1/5 of the time it took Joe. How long did James take?

*November 21, 2016*

**general**

Hmmm. What you mean is that you want her to digest the articles and explain what they mean, rather than reading them yourself and giving it some thought.

*November 21, 2016*

**Math**

56 decreased by twice Craig's savings

*November 21, 2016*

**Social studies**

It doesnt say the answer in their

*November 21, 2016*

**Social studies**

Can u help me

*November 21, 2016*

**Social studies**

Hi ms sue what is the answer to the question A; they allow producers better access to world markets ? B; they make it possible to employ more skilled labores ? C ; they provide tools that make production more efficient ? D ; they purchase raw materials needed for production

*November 21, 2016*

**Social studies**

How are capital resources used in production

*November 21, 2016*

**Maths help asap please.**

Thank you so much.

*November 21, 2016*

**Maths help asap please.**

The product of two consecutive positive integers is added to the larger of the two integers. Prove that the result is always a square number. Thank you for your help.

*November 21, 2016*

**Maths**

The product of two consecutive positive integers is added to the larger of the two integers. Prove that the result is always a square number. Thank you for your help.

*November 21, 2016*

**math**

area of a regular octagon of side 12.5

*November 21, 2016*

**Physics**

In a vertical lifting an object with mass of 2kg is lifted 1m above the ground. A work of 80J is done with a constant force. What is the acceleration of the object?

*November 21, 2016*

**Physics**

An astronaut lands on a distant planet and places a mathematical pendulum with a length of 50 cm. He measures that the pendulum makes 100 oscillations in 136 sec. What is the gravity acceleration on that planet.

*November 21, 2016*

**chemistry**

Suggest a source of error (not already mentioned) that would result in a value of x that is a) higher than the actual value b) lower than the actual value

*November 20, 2016*

**College Math **

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, four green ones, five white ones, and one purple one. She grabs seven of them. Find the probability of the following event, expressing it as a fraction in lowest terms...

*November 20, 2016*

**physics**

A solar collector is placed in direct sunlight where it absorbs energy at the rate of 780 J/s for each square meter of its surface. The emissivity of the solar collector is e = 0.76. What equilibrium temperature does the collector reach? Assume that the only energy loss is due...

*November 20, 2016*

**Life Science Math**

Cheetahs are the fastest land mammal. They can accelerate from 0 to 60 mph in 3 seconds. Assuming a cheetah’s acceleration is constant, how far has it run during that time interval?

*November 20, 2016*

**Mcro-Econ**

na

*November 20, 2016*

**interior decoration**

Which one of the following colors can you use to make a warm room seem cooler? A. Orange C. Yellow B. Red D. Blue

*November 20, 2016*

**american goverment check answers**

3. What type of court has original jurisdiction over a case involving an American suing a citizen of another country? (1 point) federal court state court Supreme ...

*November 20, 2016*

**Calculus**

A small island is 2 km off shore in a large lake. A woman on the island can row her boat 10 km/h and can run at a speed of 20 km/h. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. How far from the village should she land ...

*November 20, 2016*

**Calculus**

A factory is located on one bank of a straight river that is 2000 m wide. On the opposite bank but 4500 m downstream is a power station from which the factory draws its electricity. Assume that it costs $3 per meter to lay an underwater cable and $1 per meter to lay an above ...

*November 20, 2016*

**math**

Toffees are bought at 4 for a rupee and the same number at 6 for a rupee. Then, they are mixed and sold at 5 per rupee. What is the net profit or loss?

*November 19, 2016*

**Algebra, 8th Grade mathematics**

I need help on this question. My aunt doesn't understand it so can you help me? 1+3+3^2+3^3+3^4+••••••+3^250=? The "^" is for Square, cube and ect. It also includes X= 3^?-1 Can you help me please?

*November 19, 2016*

**science**

what types of are formed when atoms share electrons unequally

*November 19, 2016*

**SS and i need SOS. please help me**

THIS IS CRAP I GOT 33.3%

*November 19, 2016*

**Science**

How much sugar is needed to reach the point of saturation at 20 degrees celsius?

*November 19, 2016*

**Math**

a) A woman is twice as old as her daughter. Five years ago the sum of their age was 62. What are their present ages. b) A bottle is half full. After adding 275 mL to the bottle it is three quarters full. How much does the bottle hold when full?

*November 19, 2016*

**Consumer Math**

On retirement Victor was offered the option of receiving monthly payment of $1674.08 or a lump-sum payment of $150667 a) What are the respective incomes per annum of each option if the lump sum can be invested at 11.5% p.a. b) At what interest rate must the lump sum be ...

*November 19, 2016*

**math**

Karen earns a weekly gross salary of $628. Tax of $148.90 is deducted. 4.5% is paid into a superannuation fund a 8% is paid directly towards mortgage. Karen aims to save 10% of her remaining income. What amount will she save each week?

*November 18, 2016*

**african american history**

WHAT WAS A MAJOR CONCERN TO FREE BLACKS

*November 18, 2016*

**Calculus**

Consider the function g(x) = sinxcosx. a. Find an equation of the tangent line to the graph of g at (pi/3, sqrt3/4). b. Find the critical number(s) of g on the interval [0, 2pi]. Does the function have a relative minimum, relative maximum, or neither at each critical number. ...

*November 18, 2016*

**math**

what is a ordered pair? can you give me some examples please

*November 18, 2016*

**history**

What was it ?

*November 18, 2016*

**Literacy**

number 4 was correct

*November 18, 2016*

**Literacy**

Which of the following details from “Harriet Tubman” best supports the inference that Tubman had religious beliefs? 1(She is known by the code “Moses” among the escaping slaves.*** 2)She signals her arrival to the escaping slaves with a forbidden song. 3)...

*November 18, 2016*

**Government**

It's a

*November 18, 2016*

**math**

The original price of a leaf blower is $80. How much will Sean pay if he buys it during the sale? $

*November 18, 2016*

**Physics**

An empty SG bottle weights 25 g.When filled with water completely it weights 55 g and with alcohol it weights 48 g. Find the RD of alcohol A numerical

*November 18, 2016*

**Physics**

An empty SG bottle weights 25 g.When filled with water completely it weights 55 g and with alcohol it weights 48 g. Find the RD of alcohol A numerical

*November 18, 2016*

**Physics**

An empty SG bottle weights 25 g.When filled with water completely it weights 55 g and with alcohol it weights 48 g. Find the RD of alcohol A numerical

*November 18, 2016*

**US History**

All of the statements below are examples of a social revolution that came with the political revolution in the late 18th century except for: A. In the majority of states, state legislatures eliminated property qualifications for voting. B. Trade organizations for commoners ...

*November 17, 2016*

**US History**

All of the following were weaknesses of the Articles of Confederation except: A. no courts B. a vote of 50% of the thirteen states could amend the Articles C. no power to levy taxes D. no power to regulate commerce E. each state had a single vote regardless of population Is ...

*November 17, 2016*

**Calculus: Centers of Mass**

Nevermind, I got it. c = Mc/M, where Mc is the double integral over the region R [c(dA)]. Since the intersections are at (0, 0), (4, 0), and (2, 2), it's easiest to set this up in dydx. For x this becomes integral(0, 2) integral (y^2/2, 4-y) x dydx. Divide this by the ...

*November 17, 2016*

**Calculus: Centers of Mass**

Find the centroid of the region in the first quadrant bounded by the x-axis, the parabola y^2 = 2x, and the line x + y = 4. I've graphed the function, and it looks like a triangle with one side curved (the parabola). I'm not quite sure how to go about the rest of the ...

*November 17, 2016*

**US History**

The French and Indian War began with the battle between the British and French for: a. Quebec b. Fort Louisburg c. Fort Duquesne d. Pittsburgh e. Albany C is my answer.

*November 17, 2016*

**US History**

True...I guess they want to test our knowledge of the timeline of events.

*November 17, 2016*

**US History**

ALL of the following statements are correct about the slave trade EXCEPT: a. It began with the Portuguese exploration of West Africa from Senegal to Angola in the fifteenth century b. It increased when the Portuguese built several fortified outposts along the African coast c. ...

*November 17, 2016*

**US History**

The Dutch settlement of New Netherland was: A. highly aristocratic with large feudal estates called patroonships B. very successful due to available volunteers who received 50 acres of land for every four adults C. successful from the beginning because the colony's welfare...

*November 17, 2016*

**US History**

ALL of the countries below are matched CORRECTLY with the outcomes of colonization except for: a. English: established permanent settler colonies despite hardships b. Spanish: failed to find gold or to convert the Indians to Christianity c. French: succeeded in the fur trade ...

*November 17, 2016*

**graph linear equations**

I have tried going through the TI-84 plus manual that came with my calculator, so that I can graph this linear equation: 3x+4y=-16. I have not been able to graph linear equations. Can someone please tell me how to enter this equation properly into my calculator? I have solved ...

*November 17, 2016*

**Alabama history**

what effect did the great awakening and the enlightmant have on the colonies

*November 17, 2016*

**Chemistry**

Calculate the amount of heat required to convert 155 g of ice at -10oC to steam at 110oC? (155g)x[0-(-10)]C x (.50cal/g x C) = 775cal (155g) x (80cal/g) = 12400cal (155g)x(100-0)C x (1.00cal/g x C) = 15500cal (155g) x (540cal/g) = 83700cal 775cal + 12400cal + 15500cal +...

*November 17, 2016*

**TASTY MATH!**

6/24 = ??? 10/36 ??? 1/4 = 5/18 ??? I think not :) how about making 40 ? or use 9 tablespoons for 36 cookies because 9/36 = 1/4

*November 17, 2016*

**re: Differential Calculus**

x = 0, y = pi -x^2 2 cos y sin y dy +cos^2y 2 x dx - cos y dy = 0 2 cos^2 y x dx=cosy (2x^2siny+1)dy dy/dx = slope m m = 2 x cos y/(2x^2siny+1) at (0,pi) m = 2 * 0 = 0 Oh my :) horizontal there so what is y at x = 0 and y = pi LOL, zero so along the x axis

*November 17, 2016*

**MATHIN-HELPN!**

Wut the awnser?

*November 17, 2016*

**math help pls**

well, 6 - 6 = 0 all right :)

*November 17, 2016*