Friday

October 9, 2015
Total # Posts: 712

**Kitondo boys**

A triangle has vertices X(2,2) ,Y(4,2)and Z(3,4).The triangle is enlarged by a scale factor 2 through the origin.What are the coordinates of the image?
*September 28, 2015*

**Physics**

Basically... distance is 4 km Takes 4 min to go down river Takes 6 min to come up How fast is the river?
*September 22, 2015*

**Statistics/probability **

You are considering two mutual funds for your investment. The possible returns for the funds are dependent on the state of the economy and are given in the accompanying table. State of the Economy Fund A Fund B Good 20% 40% Fair 10% 20% Poor -10% -40% You believe that the ...
*September 13, 2015*

**Physics-Trajectory **

A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's ...
*September 11, 2015*

**Physics **

Three forces are exerted on an object placed on a tilted floor. Forces are vectors. The three forces are directed as shown in the figure. If the forces have magnitudes F1 = 2.0 N, F2 = 17.0 N and F3 = 15.0 N, where N is the standard unit of force, what is the component of the ...
*September 11, 2015*

**Physics**

The components of vector A⃗ are Ax = + 3.90 and Ay = -4.00. What is the angle measured counterclockwise from the +x-axis to vector A⃗ ?
*September 11, 2015*

**Physics-VECTORS**

Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?
*September 11, 2015*

**Physics **

A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is v=8t cm/s and the Y-velocity is V=30cm/s ...
*September 11, 2015*

**Chemistry**

a) Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 degrees Celcius, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 13.8 g of biphenyl in 32 g of benzene? b) Express...
*August 29, 2015*

**Math**

Interval it exists on: (5-x)y"+3xy'-y=1 y(0)=2
*August 8, 2015*

**english**

How can animated jungle animals, sea creatures, fairies, cars and other non-human characters can be used to represent race?
*August 3, 2015*

**biology**

lymphocyte
*July 9, 2015*

**nutrition**

Which of the following is one of the ways that the endocrine system interacts with the digestive system? a) Eliminates wastes generated in the body b) Transports nutrient to cells c) Controls the passage of food in the blood stream d) Secretes hormones that regulate how much ...
*July 9, 2015*

**nutrition**

Which is the best way to balance your dietary choices? a) If you overeat at lunch, you should skip dinner. b) If you eat two slices of pizza at lunch, you should walk an extra mile after dinner. c) If your dinner has no vegetables, you should eat a cereal containing fiber at ...
*July 9, 2015*

**nutrition**

I say it is D
*July 8, 2015*

**nutrition**

Which is the best way to balance your dietary choices? a) If you overeat at lunch, you should skip dinner. b) If you eat two slices of pizza at lunch, you should walk an extra mile after dinner. c) If your dinner has no vegetables, you should eat a cereal containing fiber at ...
*July 8, 2015*

**nutrition**

Which of the following is one of the ways that the endocrine system interacts with the digestive system? a) Eliminates wastes generated in the body b) Transports nutrient to cells c) Controls the passage of food in the blood stream d) Secretes hormones that regulate how much ...
*July 8, 2015*

**Math**

there is a swimming pool, 3 meters in width and 4 meters in length. the owner wants to built a uniform deck around the swimming pool which is 3 times of the area of the pool. what's the width of the deck?
*June 16, 2015*

**Differentail Equations**

I cant figure out how to do this type of problem! Consider the first order differential equation y′+(x/(x^2−4))y=(e^x)/(x−9) For each of the initial conditions below, determine the largest interval a<x<b on which the existence and uniqueness theorem for...
*June 6, 2015*

**History **

How did the success of the civil rights movement and abolishment of slavery open doors to the election of the first Black American President of the United States, Barack Obama? Can I have some examples?
*June 3, 2015*

**Physics**

A massive steel cable drags a 20kg block across a horizontal, frictionless surface. A 100N force applied to the cable causes the block to reach a speed of 4.2m/s in a distance of 2.1m . What is the mass of the cable?
*May 30, 2015*

**english**

Cuba is one of the few remaining communist countries in the world. Since the collapse of the Soviet Bloc in 1990, however, the country has promoted capitalism in the form of tourism in order to stimulate the economy.
*April 28, 2015*

**math**

a swimming pool has an area of 40 square metres and a perimeter of 26 metres what is the length and width of the swimming pool and is it possible for a pool to have the same area but a larger perimeter?
*April 11, 2015*

**geometry**

Given: AC perpendicular BD and AB congruent CB. Prove AD congruent CD. It is a kite figure. I need statements and reasons. Problem states Plan: prove triangle ABE congruent CBE. The use congruent corresponding parts AE and CE to show right triangle AED congruent CED. AD and CD...
*April 10, 2015*

**geometry**

if m<1 = 60 degrees, then m<3 + m<5 = what? | \2| 1 \| 3 ------- | ------ 6 |\ 4 |5\ | what is the transitive property of angle congruence?
*April 6, 2015*

**geometry**

use diagram given: m<XWY = 2x+5, m<YWZ = 5x-79, and m<XWZ = 122 degrees. m<YWZ= what? (x) (y) (w) (z) connect x to w, w to z, w to y Does WY bisect ,XWZ? Please show work. Th u
*April 6, 2015*

**Physicsl**

What is the magnitude of the electric field a distance 3.5mm from an electron?
*April 5, 2015*

**Trigonometry**

1. y = 2(sin(4x - pi/8)) + 1 2. y = 4(sin((2pi/3)x - 2)) - 1 3. y = 4(sin(2x + pi/3)
*April 4, 2015*

**math**

what is 4(y*y)? is it 4y*4y, or can u not distribute, and why?
*April 1, 2015*

**Statistics**

initial dose 291.8529. 25% mark in 5.1 hours
*March 13, 2015*

**science**

What molecule found in the cell membrane serves as a communication molecule as well as involved in active transport?
*March 8, 2015*

**physics**

the work done is by lifting it up so you can use mgh The tricky part here is that you need to consider where the center of gravity is and it would be the center of the log so the COG is lifted half of the total length of the log 100kg x 9.8 N/Kg x 1.65 meters
*March 5, 2015*

**math**

Isaiah and Andy had a total of 560 trading cards. After Isaiah gave1/9 of cards to Andy they had an equal # of trading cards. How many more cards did isiah have than Andy at the beginning?
*February 22, 2015*

**math**

Oh, thanks!
*February 17, 2015*

**math**

In terms of set notation.
*February 17, 2015*

**math**

I'm looking for the symbol ', and can you send me the link to it
*February 17, 2015*

**math**

Thanks, but there is no definition for the symbol '
*February 17, 2015*

**math **

I'm doing my math hw, what does the sign ' mean for sets? Thanks
*February 17, 2015*

**Calculus Please Help**

Can you please explain these two questions to me? Suppose the population size of a predator is given by P (x) = 0.006x2 + 0.005x, where x represents the population of its prey. If the population of the prey is 10,000 at the first of January and is reduced to 6,000 by May 1 of ...
*December 5, 2014*

**Math**

Nell made a pizza. she cut the pizza into fourths. then she cut each fourth. nell and her friens ate 6 of the smaller pieces of the pizza. What fraction of the pizza did Nell and her friends eat? What fraction of the pizza did Nell and friends Not eat?
*December 4, 2014*

**physics**

A roller coaster cart of mass m = 201 kg starts stationary at point A, where h1 = 27.7 m and a while later is at B, where h2 = 7.1 m. The acceleration of gravity is 9.8 m/s 2. What is the potential energy of the cart relative to the ground at A? Answer in units of J. (201*27.7...
*November 16, 2014*

**IBMY History 7**

What can we learn from the crusades?
*November 11, 2014*

**East and Southeast Asian**

D A C A B B B D A C C D A C
*November 7, 2014*

**Math help!**

Yes your answer is correct. 9^2 * 12^2 = 225. 225 squared is 15.
*October 30, 2014*

**math**

Katrina is studying the effect of foreign substances on bacteria populations. If she introduces a beneficial substance, such as food, the bacteria population grows. If she introduces a harmful substance, such as a poison, the bacteria population decreases. The function f(x) = ...
*October 30, 2014*

**Math**

I'm sorry but I do not follow. The question asks that (out of two dice) given the first dice is even - In which the first die will therefore be 2,4, or 6 - where 6 is the only option. And so what is the probability that the sum of the two dice will equal 12 given the first...
*October 20, 2014*

**Math**

If the first dice yields an even number, what is the probability that the sum of the two dices will be equal to 12? 1st Die P(even) = 3/6 = 0.50 P(6|even) = 1/3 = 0.333 2nd Die P(6) = 1/6 = .1667 So P(12) = 0.33*0.1667 ?
*October 20, 2014*

**Computer programming**

How to build a simple game in java that will allow a player to attempt to guess a randomly generated number between 0 and 10. The player can continue guessing the number until they get it right. The game should be able to do these things: 1. Game should remember each choice ...
*October 6, 2014*

**Chem HELP!!**

Which one of the following sets of quantum numbers can correctly represent a 3p orbital? a) (n = 3 l = 1, ml = 2) b)(n = 1, l = 3, ml = 3) c) (n = 3, l = 2, ml = 1) d) (n = 3, l = 1, ml = -1) e) (n = 3, l = 0, ml = 1)
*October 5, 2014*

**Math**

You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physic. You purify a sample of 2 grams.One of you colleges steals half of it, and 3 days later you find that 0.1 grams of the radioactive material is still ...
*September 16, 2014*

**PHI 208 Week 3 Readings Quiz**

Which one of these is not a principle that can be drawn from the Categorical Imperative? Act as if the maxim of your action were to become by your will a universal law. Act that you use humanity, whether in your own person or in the person of another, always at the same time ...
*September 14, 2014*

**algebra 2**

Let x = hourly wage 40x + 5(1.5x) = 475 40x + 7.5x = 475 47.5x = 475 x = $10/hour
*August 24, 2014*

**Calculus**

What is the derivative of 3sin(4x)? I have no idea where to begin!!!
*August 24, 2014*

**algebra**

(angle 1) + (angle 2) + (angle 3) = 180 Let's make an angle Q = (angle 1) + (angle 2). SO... Q + (angle 3) = 180 AND (angle 3) = Q - 45. SO... Q + (Q - 45) = 180 2Q = 225 Q = 112.5 Going back to the equation Q + (angle 3) = 180 or by rearranging it: (angle 3) = 180 - Q, if...
*August 24, 2014*

**Algebra**

thanks for the help!
*August 22, 2014*

**Algebra**

Given that xy = 3/2 and both x and y are nonnegative real numbers, find the minimum value of 10x + 3y/5
*August 22, 2014*

**statistics**

a rocket club makes its own rockets. The rockets go to a mean height of 1100 feet with a standard deviation of 60 feet. if the club fires 36 rockets, what is probability that the mean heights of the rockets will be greater than 1080p feet
*July 13, 2014*

**Math - Algebra2**

Also, you can tell that the first one is DIVERGENT because the numbers are diverging from one another! In other words, they are getting farther and farther apart The second one is CONVERGENT because all the numbers are converging to a certain number...in this case they are all...
*May 16, 2014*

**Math - Algebra2**

state whether the series is convergent or divergent 1) 3 + 12 + 48 + ... 2) 4 + 4/5 + 4/25 + ...
*May 16, 2014*

**accounting II**

i am completely stuck on this! 5. Manufacturing statements and cost behavior Tampa Foundry began operations during the current year, manufacturing various products for industrial use. One such product is light-gauge aluminum, which the company sells for $36 per roll. Cost ...
*April 30, 2014*

**accounting II**

oh, my apologies
*April 28, 2014*

**accounting II**

3. Definitions of manufacturing concepts Interstate Manufacturing produces brass fasteners and incurred the following costs for the year just ended: Materials and supplies used Brass $75,000 Repair parts 16,000 Machine lubricants 9,000 Wages and salaries Machine operators 128,...
*April 28, 2014*

**accounting**

i need help working through this! i am stuck. 3. Definitions of manufacturing concepts Interstate Manufacturing produces brass fasteners and incurred the following costs for the year just ended: Materials and supplies used Brass $75,000 Repair parts 16,000 Machine lubricants 9...
*April 28, 2014*

**Chemistry**

so then you would take 1.48 M times 42mL, then take that number and divide by .49 M, then convert to mL?
*April 20, 2014*

**Chemistry**

How many mL of 0.49 M HCl will neutralize 42 mL of 1.48 M NaOH?
*April 20, 2014*

**Cultural Anthropology**

how are traditional anthropological fieldwork techniques used in applied anthropology? How does applied anthropology benefit modern social problems? Thank you!
*April 11, 2014*

**Cultural Anthropology**

Contrast the four types of subsistence strategies, be sure to include differences in lifestyle, kinship, property, ownership, distribution of resources and division of labor. Thank you!
*April 11, 2014*

**chemistry help~Please!!!**

What are the Ka and/or Kb value for 1M ZnCl2 Show work please!!!
*April 11, 2014*

**engineering**

A certain amount of radioisotope (986.8 x 10-9 kg) is used to make the dial of a watch glow in the dark. If the half-life of this isotope is 3.69 x 103 years, how many kilograms of the radioisotope will disappear while the watch is in use for fifty years?
*March 30, 2014*

**Calculus**

When dy/dx=(x-6)^½ what does y equal?
*March 29, 2014*

**physics**

A plane is found by radar to be flying 5.9 km above the ground. The angle of elevation from the radar to the plane is 78.6°. Ten seconds later, the plane is directly over the station. Find the speed of the plane, assuming that it is flying level.
*March 13, 2014*

**Single vs double replacement reactions**

How would you compare a single replacement reaction to a double replacement reaction?in laymans terms?
*February 26, 2014*

**Decomposition reaction**

List the number of reactants and the number of products in a decomposition reaction; 2H2O(I)=2H2(g)+O2(g)
*February 26, 2014*

**Synthesis reaction**

What are the number of reactants and the number of compounds in; 2H2(g)+O2(g)=2H2O(I)
*February 26, 2014*

**american government**

can anyone help? I think it is c.
*February 21, 2014*

**american government**

I think it might be c, but it was a tax situation so I am not sure.
*February 21, 2014*

**physics**

I need to find the coefficient of the kinetic friction of the following: "a block weighing 300 newtons is moved at a constant speed over a horizontal surface be a force of 50 newtons applied parallel to the surface" would I do the following? k = coefficient of ...
*February 18, 2014*

**Spanish**

Is this correct? Complete the paragraph with the correct present-tense form of the most logical verb from the list below. Each verb will be used no more than once, and don’t forget the reflexive pronouns when appropriate. acostarse bañarse deletrear divertirse ...
*February 10, 2014*

**physics**

a 65kg person dives into the water from the 10m platform. she comes to a stop 2m below the surface of the water. what net force did the water exert on the swimmer? so for the net force i got -2548N i know: vf^2=vi^2 + 2ad vf^2 = 0 + 2(9.8)(10) vf^2 = 196 vf=14m/s therefore to ...
*February 6, 2014*

**Spanish**

Thank you SraJMcGin
*January 29, 2014*

**Spanish **

Are these correct? Answer the following questions using the present progressive. Be sure to answer with the same verb that is used in each question. 1. Creo que Xavier (1) _____ (2) __________ en la casa de sus padres mientras asiste a la Universidad. (vivir) Creo que Xavier (...
*January 29, 2014*

**math**

i was doing the mean theorem for this problem: (x+4)^2 (x-3) on [-4,3] i got to: 3x^2 + 10x-8=7 someone helped me out and told me the answer was (-5 +/- sqrt(70))/(3) but i don't know how to get to there, can someone please explain to me how to get to this point?
*January 29, 2014*

**calculus**

how did you get (-5 +/- sqrt(70))/3
*January 28, 2014*

**calculus**

i am on "rolles and the mean value theorem" and was just wondering, when i am doing rolles, do i really need to find the exact value of x where f'(c) = 0? for example: f(x) = (x+4)^2 (x-3) on [-4,3] i get to: 3x^2+10x-8=7 then i dont know if i then need to find ...
*January 28, 2014*

**calculus**

typo: 8 should = 8 i meant x should = 8
*January 25, 2014*

**calculus**

"superman is in level flight 6 miles above ground. his flight plan takes him directly over whs high school. how fast is he flying when the distance between him and the whs high school is exactly 10 miles and the rate is increasing 40mph?" i keep getting: r = 10 r'...
*January 25, 2014*

**calculus**

"superman is in level flight 6 miles above ground. his flight plan takes him directly over whs high school. how fast is he flying when the distance between him and the whs high school is exactly 10 miles and the rate is increasing 40mph?" i keep getting: r = 10 r'...
*January 25, 2014*

**Spanish**

Are these correct? Thank you for helping Finish the following sentences including at least one possessive adjective (mi[s], tu[s], su[s], nuestro[s] or nuestra[s]) in your answer. Ejemplo: La profesora que tiene mi amiga es antipática, pero "mis profesores son fant...
*January 24, 2014*

**Spanish**

Are these correct? I. Rewrite each sentence by replacing the direct object in quotation marks with a direct object pronoun [me, te, lo, la, nos, los, las]. Ejemplo: No conozco "al jefe del departamento." --> No lo conozco. 1. Esa compañía vende "...
*January 23, 2014*

**Calculus**

Water is leaking out of a pool at a rate of 4 cubic inches per second, what is the rate of change of the height of the water at the instant the volume equals 20ft cubic feet
*January 22, 2014*

**calculus**

what is the 2nd derivative of: 1-xy = x-y i get (-y-1)/(x-1) for the first the second i know is (-y-1)/(x-1)^2 but i keep getting (0)/(x-1)^2 please show me the steps i should be taking and if possible what i did wrong
*January 20, 2014*

**calculus**

a rectangle is 10 inches by 6 inches whose sides are changing. write a formula for both the perimeter and how fast each is changing in terms of L and W how do i do this, an explanation instead of an answer would be most appreciated, thanks in advance.
*January 20, 2014*

**math **

idk if this is supposed to be common sense but, i need help understanding why when i make this equation solve for (y) that there is a plus/minus answer. (yx)yx = 2x y = .5(sqrt(2x)/2) y = .5(-sqrt(2x)/2)
*January 17, 2014*

**calculus**

i need to use implicit differentiation to find the derivative: yx+y = 8 i keep getting y'=-1-y. i already know the derivative of this, by using explicit by simplification: y(x+1)=8 y=(8)/(x+1) y'= -(8)/(x+1)^2 how do i go about doing this the right way?
*January 17, 2014*

**calculus**

i need to find the derivative using chain rule: (x^2 + 2x - 6)^2 (1-x^3)^2 i got the answer from a site but the problem is i cannot get my work to match up with the answer, i dont know what im doing wrong. answer: 10x^9 + 36x^8 − 64x^7 − 182x^6 + 168x^5 + 80x^4 + ...
*January 13, 2014*

**calculus**

i need to find the derivative using chain rule and show steps: y= (x) / ((x^2)-1)^(-1/2) and is it possible to have free tutoring online like through a chatroom? i am in need of help
*January 10, 2014*

**calculus**

updating previous question so easier to understand im using chain rule to answer this question: f(x) = -5 sqrt(x^2 - 4x + 1) what is f'(x)? tried to use calculator to get the answer to base my answer off of but this is a nonreal number. does this mean i will have to use ...
*January 8, 2014*

**calculus**

im using chain rule to answer this question: -5 ((x^2) - 4x + 1)^(1)/(2) tried to use calc to get answer to base off of but this is a nonreal number. does this mean i will have to use imaginary numbers? please help
*January 8, 2014*

**Calculus**

Lim x to 3 (-x^2)/((x^2)- 6x + 9) substitution i get -9/0 factoring i get same answer would that mean the answer is infinity? if not how could i prove that it isn't infinity
*December 12, 2013*

**Calc 2**

Find the area enclosed by the equations x=16-y^2 and x=y^2-16
*December 7, 2013*