Thursday

February 23, 2017
Total # Posts: 447

**Vectors Q#2**

Find the shortest distance between the point D with coordinates (-2,-2,9) and the line passing through the points with coordinates B(2,4,6) and C(4,1,5)

*February 14, 2017*

**Vectors - Maths**

Clarification AC is the midpoint of the HYPOTENUSE DB of the right angle triangle

*February 14, 2017*

**Vectors - Maths**

In triangle ABD, AC = CD = CB. Let AB = u and BC = v. Prove that DAB is a right angle triangle. AC is the midpoint of the assumed "right angle triangle" and is equidistant from the three vertices. Angle DAB is presumed to be 90. Pls help me with this proof

*February 14, 2017*

**Vectors**

In triangle OAB, OA = 3i + 4k and OB = i + 2j - 2k. Find OP, where P is the point where the bisector of Angle AOB intersects AB. Answer is 7i/4 + 5j/4 + k/4 Don't use the matrix method as I haven't learnt it yet and please show working. Thx a lot.

*January 11, 2017*

**Need help with vector questions posted below**

Hope you didn't miss mine below :)

*January 6, 2017*

**math**

Let x be mother and y be son Equation 1 : x - 5 = 2*(y - 5) Equation 2: x + 6 + y + 6 = 82 x - 5 = 2y -10 (1) x + y + 12 = 82 (2) x -2y = -5 x + y = 70 [Eliminate x] -3y = -75 y = 25 [Son's age] Sub y = 25 into x + y = 70 x + 25 = 70 x = 45 [Mother's age] Check my ...

*January 6, 2017*

**Math**

Let x = big pail and y = small pail Equation 1 : x + y = 21.8 Equation 2 : 9*(y - 0.36) + (y - 0.36) = 21.8 Therefore, big pail = 19.26 litres Therefore, small pail = 2.54 litres

*January 6, 2017*

**cirle the smaller number**

Not entirely sure what you mean but 1 will be the smallest number

*January 6, 2017*

**Science**

Go to Google and type "definition of love"

*January 5, 2017*

**Math**

9 > b

*January 5, 2017*

**social studies**

Please check your spelling. Also what's the quote?

*January 5, 2017*

**Vectors - Maths [Second Question]**

Let a = i - j + 2k and b = i + 2j - 4k a) Find 2a - 3b This one was easy. It should be -i - 8j + 16k b) Hence find a value of m such that a, b and c are linearly dependent, where c = mi + 6j - 12k. I struggled to solve this one. Please help me by showing your working and ...

*January 5, 2017*

**Vectors - Maths**

Given that a = i - j + 2k, b = i + 2j + mk and c = 3i + nj + k, are linearly dependent. Express m in terms of n in simplest fraction form. Answer: m = (2n-9)/(n+3) Can someone pls show their working and explanation? Thx a lot ~C~

*January 5, 2017*

**Science**

An increase in the level of nutrients in a water body leads to an excessive increase in the population of algae in the water body. When these algae die, they serve as food for decomposers. A lot of oxygen is utilised in this process, consequently leading to a decrease in the ...

*January 5, 2017*

**Science**

Sorry i can't post the URL :( I am not allowed. hopefully u will be able to find it in google

*January 5, 2017*

**Science**

I can't explain it any better than this website: How to find Polaris the North Star by instructables . com

*January 5, 2017*

**science**

(NH4)2CO3 (s) => 2NH3 (g) + CO2 (g) + H2O

*January 5, 2017*

**math**

You muddled up your Step #3 you did not have to times (2) in front. To clarify here is what I did: 6x + 8(1/2x + 3/4) = 10 6x + 8/2x + 24/4 = 10 6x + 4x + 6 = 10 10x = 4 x = 2/5

*January 5, 2017*

**calculus**

What is g(h(x))? Can't help you if you do not have the equation posted. Find the derivative of F(x) and sub in -2 replacing x

*January 5, 2017*

**Math**

If the baseball team won 18 games, then they lost 12 games. So the percentage of games lost is 12/30 x 100% = 40%

*January 5, 2017*

**Math**

Let peanuts = p, chocolate = c and raisins = r p = (r-20) c = (r/2) r = r Equation is (r-20) + r/2 + r = 200 Take it home from here :) GL Need help? Ask!

*January 5, 2017*

**Physics**

?????? Physics is good!

*January 5, 2017*

**Math**

Scaling factor is 12/8 = 3/2 Therefore length of the 12 tiles wide rectangle is 10 times 3/2 = 15 tiles long

*January 5, 2017*

**Math**

80 + 6x = 145 - 7x 13x = 65 x = 5 After 5 weeks both of you will have $110

*January 5, 2017*

**Math**

12 slices to a pizza 3/4 of 12 is 9 slices gone so 3 slices left

*January 5, 2017*

**Math discussion**

Just a possibility - you do realise that the Internet address could be a public wifi

*January 5, 2017*

**Algebra**

My answer *** What is the product of (–6.8)2? a. –13.6 b. 46.24*** c. –46.24 d. 13.6 2. Simplify the expression - Square root 196 . a. 98 b. –14*** c. 14 d. 392 3. Simplify the expression square root 100/49 . a. 10/7 b. 17*** c. 5/7 ...

*September 28, 2016*

**Math**

What would be the total amount if Sara deposited $700 at 2% compound interest for 23 years?

*July 30, 2016*

**math**

Find the area of the following plane figure. An ellipse has a major axis of 14 cm and a minor axis of 10 cm. Find its area. Area (to the nearest tenth) =

*July 5, 2016*

**math**

Find the area of the following plane figure. Use = 3.14. A circle has a radius of 8 cm. What is its area? Area (to the nearest tenth) =

*July 5, 2016*

**math**

Jon Ericson bought a home with a 11.5% adjustable rate mortgage for 20 years. He paid $10.67 monthly per thousand on his original loan. At the end of 2 years he owes the bank $50,000. Now that interest rates have gone up to 13%, the bank will renew the mortgage at this rate or...

*July 5, 2016*

**math**

The garage you work for as an auto mechanic measures 230 ft. by 150 ft and handles 69 cars. Using the existing garage as a model, how much space would you plan to have in your garage? Number of cars parked at any one time = 24. Required area of service garage =

*July 5, 2016*

**math**

Find the area of the following plane figure. A circle whose circumference measures 28 centimeters. Area (to the nearest square centimeter) =

*July 4, 2016*

**math**

Solve the following problems related to automobile insurance. Jerry Adams normally pays $875 for bodily injury and property damage insurance. His insurance company increases premiums by 150% for 1 accident, 200% for 2-3 accidents, and 250% for 4 accidents. Find his premium for...

*July 4, 2016*

**math**

Find the area of the following plane figure. Find the altitude of a triangle whose area is 100 cm2 and whose base is 20 cm. Altitude =

*July 4, 2016*

**math**

Use the formula to solve the problems. B * In The amount that results when $3,000 is compounded at 7% annually over eight years. $ a0 The interest earned in this case.

*July 4, 2016*

**math**

Work the following area application problem. You are given the job of laying carpet for a six-story building. At each floor the dimensions of the floor are 75 meters in length by 40 meters in width. A stairwell takes up a space 2.5 m by 1.5 m, and cuts through each floor. If ...

*July 1, 2016*

**math**

Compute the following costs of services problems. Hourly rate of labor = $12.00 Duration of job = 3 1/2 hours Overhead rate = 66 2/3% Price of parts = $112.50 Find total cost of job. $

*July 1, 2016*

**math**

Total cost of job = $147.51 Duration of job = 5 hours Price of parts = $32.50 Overhead rate = 55% Hourly labor rate = $

*July 1, 2016*

**math**

Labor rate = $14 per hour Hours worked = 40 Overhead rate = 125% Retail price of good furnished = $85 Sales tax rate = 6% Total bill for services and parts = $

*July 1, 2016*

**math**

Amount of chicken = 48 lb. Portion size = 8 oz. Number of patrons served =

*July 1, 2016*

**geometry**

Find the coordinates of the midpoint of a segment having the given endpoints. Q(1, -3), R(11, 5)

*June 14, 2016*

**Chemistry**

Given the following information: C(s) à C(g), H = +715 kJmol-1 Cl2(g) à 2Cl(g), H = +242 kJmol-1 C(s) + 2Cl2(g) à CCl4(g), H = -135.5 kJmol-1 Calculate the average bond dissociation enthalpy of a C-Cl bond.

*May 12, 2016*

**Language Arts, check!!!**

B D A A Are correct

*April 25, 2016*

**Math**

A bracelet is 8 inches long. The string to make it is sold by the foot. What fraction of a foot is used to make the bracelet? Anything would help! 12 inches= 1 foot

*March 20, 2016*

**Med**

What is the influence of pressure on the respiratory system?

*February 11, 2016*

**Physics**

A ball is projected horizontally from the edge of a table that is 1.14 m high, and it strikes the floor at a point 1.40 m from the base of the table. It's initial velocity is 2.9 m/s. How high is the ball above the floor when its velocity vector makes a 43.6o angle with ...

*February 6, 2016*

**Language**

raina the helper is right

*January 17, 2016*

**MATH help ty**

Sub the second equation into the first.

*January 5, 2016*

**Discrete Math**

A quiz consists of 3 multiple choice questions, each of which have 10 answer choices. You are allowed three attempts at the quiz. What is the probability that someone would end up with a perfect score for the quiz simply by guessing the answers?

*December 16, 2015*

**Math**

I can grade 5 papers in 45 minutes how many papers can I grade in 1.5 hours

*December 14, 2015*

**Chemistry**

Thank you haha I was just confused because it's Ca(HCO3)2 and I didn't know if it was a tricky question

*December 13, 2015*

**Chemistry**

1?

*December 13, 2015*

**Chemistry**

How many calcium atoms are in a formula unit of calcium hydrogen carbonate? 1. 1 2. 2 3. 4 4. 3 5. 5

*December 13, 2015*

**Accounting - Tax**

Bob (age 40) and Susan (age 39) Cowen are married. Susan works as a retail manager and Rob is a self-employed electrician but does not maintain a home office. Their 2015 tax and other information are as follows: Salary – Susan 75,000 Federal withholding on salary 24,000 ...

*November 16, 2015*

**Chemistry**

Microwaves, such as those used for radar and to heat food in a microwave oven, have wavelengths greater than about 3 mm. What is the frequency of radiation of wavelength 13.82 mm?

*October 20, 2015*

**English**

thank you :D .. ellen1 is another website, ("The Women's Rights Movement") is the other.

*October 13, 2015*

**English**

I have one author from one website is this an in text citation (Ellen, Judy. Pg 1)

*October 13, 2015*

**English**

I did but the website doesn't have an author. I put this on my work cited list: "The Women's Rights Movement, 1848–1920 | US House of Representatives: History, Art & Archives." The Women's Rights Movement, 1848-1920. Web. 13 Oct. 2015. plus the ...

*October 13, 2015*

**English**

“The Women's Rights Movement, 1848-1920. Web. 13 Oct. 2015. Is this considered a in text citation?

*October 13, 2015*

**English (Check)**

ok thanks

*October 13, 2015*

**English (Check)**

I'm not writting a paper, I'm doing a powerpoint and I've gotten my information from a website and it doesn't have any authors or page number..

*October 13, 2015*

**English (Check)**

edit: The natural rights for women should be about social, and institutional barriers that limits women’s right that includes their family responsibilities.. Meaning that a female shouldn’t wait hand and foot for a man. This also means women should not...

*October 13, 2015*

**English (Check)**

The title of my project says it all.. Women are most effected by the issues. The women right movement have been going on ever since the 1800’s. The natural rights for women should mean them getting equal pay, getting the same job as a man and women not being ...

*October 13, 2015*

**Chemistry**

I think the combustion results in 18.8 g H2O... still don't know how to get CxHy though.

*September 29, 2015*

**Physics**

A radar station locates a sinking ship at range 16.0 km and bearing 136° clockwise from north. From the same station, a rescue plane is at horizontal range 19.6 km, 155° clockwise from north, with elevation 2.35 km.

*September 6, 2015*

**Physics**

Two people pushing a stalled car from rest generate a net force of +840N for 5.0s. What is the cars final velocity?

*September 4, 2015*

**Chemistry**

Calculate delta g and Kp for the following equilibrium reaction. Keep getting 7.2E-81 and the answer is 4.5E-81 Why?

*April 14, 2015*

**Calculus**

A wealthy patron of a small private college wishes to endow a chair in mathematics with a gift of G thousand dollars. Suppose the mathematician who occupies the chair is to receive $110 thousand dollars per year in salary and benefits. If money costs 8% per year compounded ...

*February 13, 2015*

**Chemistry**

I appreciate the help even with the slight attitude. Just to let you know in all respect my professor assigned this during my winter break last minute to me soon to be going back for spring semester, we've never learned how to do buffer equations yet. So I'm trying my ...

*January 17, 2015*

**Chemistry**

I do know that titration curves are done with pH vs Volume. This is pretty much exactly how my teacher worded it, so I do know that I'm reaching that's why I'm trying to figure it out to the best of my ability. Please someone help.

*January 17, 2015*

**Chemistry**

Problem: Calculate the pH titration of 50 mL of 0.02M H3PO4 from pH 1 to 13 with 0.4M NaOH. So I believe the balanced reaction is: H3PO4 + OH --> H2PO4 + H2O (Since Na I believe is insignificant, maybe that's wrong. If so then, H3PO4 + NaOH --> NaH2PO4 + H2O) ICE ...

*January 17, 2015*

**chemistry**

What volume of 0.20M NaOH will contain 1.00g of NaOH

*January 11, 2015*

**math**

The answer is 6:4 I just answered the question and got it right.

*December 18, 2014*

**Statistics**

Daily water intake (including water used in drinks such as coffee, tea and juice) for Canadian adults follows a normal distribution with mean 1.5 litres and standard deviation 0.31 litres. (d) Using the 68-95-99.7 Rule, approximately 95% of samples of 22 Canadian adults will ...

*November 5, 2014*

**statistics**

I this binomial? or No? A gumball machine contains 25 gumballs - 9 red, 6 blue, 7 green and 3 yellow. You buy five gumballs from the machine. X = number of green gumballs you get

*November 4, 2014*

**Math**

I meant to say x>13.5

*October 16, 2014*

**Math**

x>-13.5 is the answer

*October 16, 2014*

**Physics-intro**

0.15

*October 6, 2014*

**English**

I have posted two essays recently and have received no response, one was only a few hours ago but the other one was over 10 days ago....pls help with the one from two hours ago or let me know if you are unable to help. thanks

*September 25, 2014*

**English**

Though it is a history essay, my question has to do with writing and essay. The following is what I submitted for an essay and was told it was good but it lacked an introduction and thesis. My first paragraph is what I thought was a sufficient introduction and thesis. Could ...

*September 25, 2014*

**English Classification Essay**

I have a lot of holes where I need to look up some research, but can you give me some feedback on the following classification essay: P.J. O'Rourke said, “We loved cars until the 70's or so, they then became appliances. What began as pleasure became a necessity.&#...

*September 15, 2014*

**English**

Thank you! or should the third category be family and include van suv and station wagon???

*September 14, 2014*

**English**

there are basically three types of vehicle ads the pick up truck, the cool dude car and the mommy van???

*September 14, 2014*

**English**

I thought you were suggesting I move specifically to trucks? So if not then okay, "There are basically three types of ads for vehicles, those geared to the economy minded, the cool dude or the hauler???

*September 14, 2014*

**English**

I am required to do three. so worker macho guy and what???

*September 14, 2014*

**English**

there are three types of truck advertisements those geared toward the worker, the economist and the macho guy

*September 14, 2014*

**English**

so are you saying narrow it to truck and say advertisements for trucks appeal in three ways, their intended use, mileage needs and image. (Then, I go into intended use=hauling, mileage needs big wheels for mountains etc, image=large trucks macho)? Does that work? Is that where...

*September 14, 2014*

**English**

I know you are trying to make me think this out but i need clarification....I don't know how to categorize those two ideas. if i just put truck that can overlap with affordable and also image....right?

*September 14, 2014*

**English**

TV advertisements appeal to audiences in the following ways: accessibility (or should I say affordability?), image and mileage needs? This is my struggle, how to categorize that third area and not overlapping and staying distinct....

*September 14, 2014*

**English**

The essay is supposed to be on Advertisements, then we have to narrow it. I have narrowed it to TV advertisements on cars. I was thinking of TV advertisements appeal in the following ways: accessibility, image changing and ???. accessibility would be those advertisements that ...

*September 14, 2014*

**english**

Yes that is what I thought but apparently he had concerns with it thank you

*September 13, 2014*

**english**

Not long after the introduction of television itself, television commercials became a tool for advertising products and services. The very first television advertisement appeared on July 1, 1941 for a Bulova watch. Other companies like Gimballs department store and Firestone ...

*September 13, 2014*

**english**

need some ideas for a classification essay on advertisement pls I have submitted three different options to my teacher and he has declined them either saying there is overlap or they are not distinct. i am stumped! pls help

*September 13, 2014*

**English**

yes i read the whole book can i have the answer

*May 29, 2014*

**business math**

If the Powershooter 1800 is marked up 58.50 what is the cost and the percent markup cost?

*May 29, 2014*

**English**

Neither of the choices ________ attractive to the group of workers that _____________ on strike.

*May 13, 2014*

**English - Check these?**

All correct except for the second question. It's the third answer.

*April 30, 2014*