Thursday

December 8, 2016
**math**

There are three natural numbers. The first and second are less than the third by 40 % and 50 % respectively. what percentage of the second number is the first number How to do best way help me

*Saturday, June 25, 2016 by vipul*

**Nct**

A ball impinges directly on a similar ball at rest. The first ball is reduced to rest by the impact. Find the coefficient of restitution, if 1/5 of the initial kinetic energy is lost by impact

*Saturday, June 25, 2016 by Nasser*

**math**

A local gym charges $15.00 per month for membership and additional $3.25 for each class. If the monthly charge is $54.00 how many classes did you take What is the first step

*Saturday, June 25, 2016 by Alma*

**Math**

An observer atop a cliff sees a speedboat approaching a dock located at the base of the cliff directly below the observer. Express the distance, d, from the observer tot he boat as a function of the distance, x, from the boat to the dock, if the cliff is 150 feet high. State ...

*Friday, June 24, 2016 by Brad*

**probability and statistic**

Heart failure is due to either natural occurrences (85%) or outside factors (15%). Outside factors are related to induced substances or foreign objects. Natural occurrences are caused by arterial blockage, disease, and infection. Assume that causes of heart failure between ...

*Thursday, June 23, 2016 by Sarah*

**Probability and statistic**

An assembly consists of three mechanical components. Suppose that the probabilities that the first, second, and third components meet specifications are 0.95, 0.96, and 0.98. Assume that the components are independent. Let X be the number of components that meet specifications...

*Thursday, June 23, 2016 by Maureen*

**Math (exam tomorrow)**

For the function f(x)=3cos(2x),what is the first point where it is increasing the fastest? Also please tell me how you know or derived that! Thank you!!! Please answer ASAP

*Wednesday, June 22, 2016 by Squad*

**MATH**

The cost of attendance at State University is $22,000 for the first year. Devise a periodic savings plan that will allow you to make small deposits for 5 years at a simple interest rate of 2% and save enough to pay for the first year at the university.

*Wednesday, June 22, 2016 by GHOST*

**Constitutional Law**

Identify the three kinds of criminal statutes that should never be used in context involving speech, even when the First Amendment does not protect the speaker’s conduct.

*Wednesday, June 22, 2016 by Shawn Howard*

**math**

Sales at a certain department store follow the model 4072-01-02-03-00_files/i0100000.jpg where y is the total sales in thousands of dollars and x is the number of years after 2001. What was the first year that sales fell below $50,000?

*Wednesday, June 22, 2016 by Anonymous*

**maths**

find the sum of first 15 multiples of 8

*Tuesday, June 21, 2016 by mrinal*

**Personal Finance**

Suppose you buy a two-year CD for $10,000 from First Command Bank. Assume monthly compounding. Use the APR from the below Table 4.1 and the compound interest formula to determine how much interest the CD earns for you at maturity. The Table says APR is 3.84%

*Monday, June 20, 2016 by Kinsey*

**Personal Finance**

Suppose you buy a two-year CD for $10,000 from First Command Bank. The interest earned at maturity is $______. Use the APY (Annual Percentage Yield) from Table 4.1. The Table says APY for this is 3.9%

*Monday, June 20, 2016 by Kinsey*

**math**

If the sum of first four terms of GP is 30, sum of last four terms of GP is 960 and first term is 2 then find common ratio.

*Sunday, June 19, 2016 by Bhishma*

**math**

How many terms of arithmethic sequence with the common difference of 4. And the first is equal to 3 and the last term 59??

*Sunday, June 19, 2016 by ralph*

**Math**

There are two alloys consisting of zinc, copper and tin. The first alloy contains 25% zinc and the second alloy contains 50% copper. The percentage of tin in the first alloy is twice that in the second alloy. 200 kg of the first alloy and 300 kg of the second are melted ...

*Sunday, June 19, 2016 by Tamasa*

**Physics (Normal force and static coefficient)**

Calculate the normal force for a 2 kg object at rest on an inclined surface, α=42 degrees How much is the static coefficient of friction between the surface and the block ---- My work: N = mg*cos(θ) N = (2kg)(9.8n/m^2)cos(42) = 14.57 N F = µsN µs = F/N &...

*Saturday, June 18, 2016 by Jana*

**computer science**

QUESTION 1 When using the OR logical operator to connect 2 conditions to create a complex Boolean expression, neither the first condition nor the second condition has to be true for the complex Boolean expression to be true. True False QUESTION 2 String comparisons are ...

*Saturday, June 18, 2016 by Tom*

**Chemistry**

A solution is made by dissolving 32g KCIO3 in 100g H20 at 80C. The solution is cooled to 10C. Describe what you would observe as it cooled and state what temperature this first occurs at. What mass of crystals would settle out of the solution?

*Saturday, June 18, 2016 by Naomi*

**INT 1111**

QUESTION 1 When using the OR logical operator to connect 2 conditions to create a complex Boolean expression, neither the first condition nor the second condition has to be true for the complex Boolean expression to be true. True False QUESTION 2 String comparisons are ...

*Saturday, June 18, 2016 by Tom*

**math**

still need help: Write an arithmetic sequence that has a common difference of 4 and the eighth term is 13. What is the first term? What is the 23rd term in the sequence

*Saturday, June 18, 2016 by Randy*

**Algebra**

I am so lost on these problems. Write a geometric sequence that starts with 3 and has a common ratio of 5. What is the 23rd term in the sequence. Write an arithmetic sequence that has a common difference of 4 and the eighth term is 13. What is the first term? What is the 23rd ...

*Friday, June 17, 2016 by Randy*

**math**

1. Examine the first four terms in each of the following number sequences: *2, 7, 12, 17 my formula x+5 *7, 21, 63, 189, 567 my formula x(2)+x *1000, 850, 700, 550 my formula x-150 * –10, –6, –2, 2 my formula x+4 For each sequence, what would be the 20th and ...

*Friday, June 17, 2016 by cindy*

**social studies.**

1. A feeling of intense loyalty to one's country or group is called _____. a. nationalism 2. Which country fought in the war but did not sign the Treaty of Versailles? b. United States 3. The Treaty of Versailles required which nation to make reparations-or payments-for ...

*Friday, June 17, 2016 by cuz im cool.*

**social studies.**

1. The first state to grant women equal suffrage was _______, in 1869. b. Wyoming 2. Which incident leg to Congress's declaring war on Spain? a. explosion of the Maine 3. The first action of the Spanish-American War took place in ______. c. the Philippines 4. IN many ...

*Friday, June 17, 2016 by cuz im cool.*

**Statics**

In a first semester unit there are four tests each of equal weight i.e. each worth 25%. Your average on the first three tests has been 62%. You need to get an overall average of 65% to proceed to the second semester. What percentage should you try to get on the fourth test? ...

*Friday, June 17, 2016 by vicky*

**Math**

Gerald reads 120 pages of a book in 4 days. If he always reads 6 more pages than the previous day,find the number of pages he reads on the first day.

*Friday, June 17, 2016 by Hummers*

**Math10**

The 4th term of an arithmetic sequence is 18 and the 6th term is 28. Give the first 3 terms. Use the formula

*Thursday, June 16, 2016 by Louie*

**math**

topic tree diagram. a box contain 6red and 4blue,5white balls.there balls are the bag one after the other without replacement find the prob of obtaining 1 first the same colour 2 first blue 2nd red,than white. 3. 1st red. 4different colours

*Thursday, June 16, 2016 by Tebiowei*

**Algebra 2**

The lengths of boats in a harbor, in feet, are listed below. 17, 16, 56, 50, 14, 30, 12, 33, 82, 16, 10, 52, 25, 25, 19, 75, 24, 12, 30, 12, 20, 38, 26, 36, 33, 24, 18, 26, 40, 40 (a) Make a frequency table for the data set. Use 5-14 as the first class interval. (b) Use the ...

*Thursday, June 16, 2016 by Bram*

**english**

From reading “The Raven and the First Men: The Beginnings of the Haida,” the reader can tell that the Haida people value family due to the actions of

*Thursday, June 16, 2016 by raul lopez*

**English**

Write a speech in the following situation- You are the leading actor in a school play It is the interval in the play. The first half was dreadful, with actors forgetting their lines, props falling over and the audience laughing for the wrong reasons..‟ Use a range of ...

*Wednesday, June 15, 2016 by Bob*

**math**

two bus start from the same bus stand at 8a.m. one travels at 40km/h and other at 50km/h. the second bus reaches the next stop at 10a.m.How much later will the first bus arrive?

*Wednesday, June 15, 2016 by manju *

**Math Functions**

A stock went on the market and began with a start value of $2. After 6 months of being on the market it reached its maximum value of 52$ but then dropped back down to 2$ by the 12th month. Three competing investment firms have come up with the following models. Royal Bank: p(t...

*Wednesday, June 15, 2016 by Dyrone*

**chemistry **

A reaction has a first order rate constant of 6.11x10-5 s-1 at 25C and 0.00221 s-1 at 85oC. What is the value of the rate constant at 63oC?

*Tuesday, June 14, 2016 by Basil*

**history**

compare & contrast the accomplishments, shortcomings of the first four presidents: Washington, Adams, Jefferson, Madison thank you

*Tuesday, June 14, 2016 by lauren*

**Math**

For the past 5 years, Frank and Peggy have deposited $15,000 in a retirement account with a simple interest rate of 7%. They plan to continue to make annual deposits for the next 20 years. Explain how their money will grow over time. Note: You do not need to extend their ...

*Tuesday, June 14, 2016 by Kenneth *

**Math**

in a 6 side polygon, the first two angles are equal. , the third angle is twice the equal angles, two other angles are thrice the equal angles, while the last angles is a right angles, find the value of each angles

*Tuesday, June 14, 2016 by Evi*

**Maths **

A shopkeeper buys a number of blue pens and red pens. He pack 3 blue pens and 2 red pens into a packets for sale. If he wants to obtain 160 packets of the pens he needs another 25 blue pens. What is the total number of the pens bought by him at first?

*Tuesday, June 14, 2016 by NUR FARZANAH*

**Math**

The ratio of pedal turns to rear-wheel turns in first gear is 7 to 11. How many times in first gear dose the rear-wheel turn if pedals turn 140 times

*Tuesday, June 14, 2016 by Shavonda *

**math**

The sum of 5th term and 24th term is 50 Find the sum of first term and 28th term. Also find sum of 28th term of this sequence?

*Tuesday, June 14, 2016 by ramla*

**Chemistry **

The gas phase reaction X+Y⇄ Z is first order in Y and second order in X. If the concentration of X is double and concentration of Y is tripled. The reaction rate would be increase by a factor of: then, Rate= k [x]^2[y] --> k[x]^4[y}^3 is this the correct line of ...

*Tuesday, June 14, 2016 by ED *

**maths**

robin invests $50 on the first of every month into a superannuation account. His employer, Batman, pays 9% of Robin's monthly income of $2500 at the end of the month into the same account. Interest is paid at the rate of 6% p.a. compounded monthly. (a) Calculate the total ...

*Tuesday, June 14, 2016 by gscc*

**maths**

Felicity has just commenced work and is investigating superannuation funds. She calculates that she will need $1 000 000 in her fund when she retires in 40 years. She finds a fund guaranteeing to pay interest on each deposit at a rate of 6% per annum compounded monthly. She ...

*Tuesday, June 14, 2016 by gscc*

**math**

10 years ago raj deposited $5000 into an investment account with intrest compound quarterly. for the first 5 years the intrest rate was 6% and for the next 5 years the interest rate changed to 4.5% how much money is in the account now

*Tuesday, June 14, 2016 by bobby*

**Math**

Richard cuts two of his neighbours lawns. the first is 8m long and 2m wide what is the area? the second lawn takes richard 5 times as long to cut and he knows that all lawns have the same length dimension what is the width of the second neighbour's area?

*Monday, June 13, 2016 by PANDA*

**maths**

Felicity has just commenced work and is investigating superannuation funds. She calculates that she will need $1 000 000 in her fund when she retires in 40 years. She finds a fund guaranteeing to pay interest on each deposit at a rate of 6% per annum compounded monthly. She ...

*Monday, June 13, 2016 by gscc*

**gscc**

robin invests $50 on the first of every month into a superannuation account. His employer, Batman, pays 9% of Robin's monthly income of $2500 at the end of the month into the same account. Interest is paid at the rate of 6% p.a. compounded monthly. (a) Calculate the total ...

*Monday, June 13, 2016 by gscc*

**algelbra**

an algebra student has test scores of 84,76, and 88 on his first three tests. what scores must he earn on his fourth test so that his average is 85 or higher

*Sunday, June 12, 2016 by Tahlia*

**Science**

The Environmental Defense Fund, The Friends of the Earth, and The Natural Defense Council, are all divisions of The Environmental Protection Agency. True*** False After the first Earth Day, the Sierra Club expanded to 20 states in 1970. In 1971, the anti-environmental group ...

*Sunday, June 12, 2016 by Kaai97*

**maths**

the sumof three positive numbers is 26.the second number is 3times as large as the first.if te sum of the squares of these numbers is least find the numbers

*Sunday, June 12, 2016 by anjali*

**Physics**

A ball is drop from a height of 20m and rebounce with a velocity which is 3/4 of this velocity with which it hit the ground. What is the time interval between the first and second bounces? (g=9.8m/s2)

*Sunday, June 12, 2016 by Padmore*

**English**

1. Salt Lake City, Utah's capital and largest city, was founded in 1847. 2. Janice and Carla spent the day at the mall. 3. Standard time was adopted in the United States in 1884. 4. The geographic center of the United States is in Kansas. 5. The first safety lamp for ...

*Sunday, June 12, 2016 by ANONYMUS*

**Math**

Linda scores 72 on her first algebra test. What must she score on the second test if her average score on both tests is to be 81

*Saturday, June 11, 2016 by Kiara *

**math**

Mercy must obtain an average mark of at least 85 to get an A grade in her mathematics examination,out of the four examinations she obtained 80,85 and 82 in the first three. Find the mark she must obtain on the fourth examination of to enable her get an A grade.

*Saturday, June 11, 2016 by Glory *

**English**

What should we do to live a healthy life? Let me tell you about what to do for a healthy life. First, we should eat healthy food to stay healthy. It is better to eat brown rice than white rice. Second, we should exercise regularly. I like playing badminton, so I play badminton...

*Saturday, June 11, 2016 by rfvv*

**computer networking**

A firm is assigned the network part 128.171. It selects an 10-bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet. Programming?

*Saturday, June 11, 2016 by vincent*

**History ~ Help**

"Question: What factors led to the rise of Fascism?" "I'm not here to cheat, I'm here for help, any ideas? Thank You!" Throughout the 20th Century, Fascist leaders came to power in various countries, including Germany, Italy, Soviet Union, Japan, ...

*Friday, June 10, 2016 by Jimmy*

**Math**

If the third term of a gp =4 than product of first five term=

*Friday, June 10, 2016 by Abhi*

**physics**

The two small spheres each with mass m= 25g are hung by silk threads length L=.65m from a common point. When the spheres are given positive charge such that q1=2q2, each thread hangs stationary at theta=15 degrees from the vertical. Using Newton's first law and coulomb'...

*Thursday, June 9, 2016 by someone*

**math**

The figure below shows the ellipse $\frac{(x-20)^2}{20}+\frac{(y-16)^2}{16}=2016$. [asy] defaultpen(linewidth(0.7)); pair c=(20,16); real dist = 30; real a = sqrt(2016*20),b=sqrt(2016*16); xaxis("x",c.x-a-dist,c.x+a+3*dist,EndArrow); yaxis("y"...

*Thursday, June 9, 2016 by rui rui*

**None**

If I have 5 things to do, 2 will take 1 hour and 3 will take 30 minutes which should I do first?

*Thursday, June 9, 2016 by Mr.Sir*

**Science**

A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with an amplitude of 7.5 cm. A second identical block, moving at 12 m/s in line with the spring, strikes the first one when the spring is at its maximum ...

*Thursday, June 9, 2016 by Lucy*

**Essay Evaluation (Writeacher)**

Prompt: Explain the relationship between Lennie and George. How does George take responsibility for his companion? Explain how George show loyalty and compassion by taking Lennie's life. I haven't written much, so here's my first body paragraph. It explains the ...

*Thursday, June 9, 2016 by Victoria*

**economics**

The United States is one of the nations in the world with the highest number of Economists. They are even some Economic Nobel laureates in the country. Why do you thinks the country has been in a recession for this long when we have many Economists? Why did they not prevent ...

*Thursday, June 9, 2016 by Dela*

**ecomomics**

Why do you thinks the country has been in a recession for this long when we have many Economists? Why did they not prevent the recession in the first place? Make sure to include some references in your answers.

*Wednesday, June 8, 2016 by jenny*

**Pre-Calculus**

Your computer supply store sells two types of laser printers. The first type, A, has a cost of $86 and you make a $45 profit on each one. The second type, B, has a cost of $130 and you make a $35 profit on each one. You expect to sell at least 100 laser printers this month and...

*Wednesday, June 8, 2016 by Alexa*

**Math**

1. What is the equation of the circle with center (-4,-3) that passes through the point (6,2)? A) (x-4)^2+(y-3)^2=25 B) (x-4)^2+(y-3)^2=125 C) (x-(-4))^2+(y-(-3))^2=25 D) (x-(-4))^2+(y-(-3))^2=25 I'm really not sure how to do this at all, so any help would be absolutely ...

*Wednesday, June 8, 2016 by Tim*

**English**

There are 10 English sentences. A person is asked to read all the sentences and translate them into Korean. He should read the first sentence and then he should translate into Korean. After that he should read the second sentence and then he should translate the second ...

*Wednesday, June 8, 2016 by rfvv*

**Math**

1. Subtract (4x + 2y) – (8x – 3y). –4x – y 12x – y 12x + 5y –4x + 5y 2. Determine the best name for the quadrilateral. Graphic rectangle rhombus trapezoid parallelogram 3. Which figure has rotational symmetry for an angle of rotation of 270°? ...

*Wednesday, June 8, 2016 by Help me PLEASE*

**Calc**

sinx+x^2y=1 use implicit differentiation to find the second derivative. For the first derivative I got (cos(x)+2xy)/x^2. I have a feeling that is wrong, can someone please help and show steps on how to do this problem. (studying for a midterm).

*Wednesday, June 8, 2016 by Anonymous*

**chemistry**

The equilibrium constant for the reaction Cu3(PO4)2(s) 3 Cu2+(aq) + 2 PO43–(aq) is K = 1.40 x 10–37. Suppose that a beaker is filled to 1 L with a solution containing [Cu2+] = [PO43–] = 10.0 nM...

*Tuesday, June 7, 2016 by jess*

**History**

How are living conditions in the twenty-first century different than conditions in the nineteenth and early twentieth centuries? (You may compare any of the following areas: the role of women, leisure and entertainment, social classes, education, family, legal rights, and/or ...

*Tuesday, June 7, 2016 by Nikki*

**Math(PleaseHelp, NewEquation SameDescription)**

Orienteering is a sport that involves navigating your way to a series of checkpoints with the aid of a map and compass. The goal is to find each point on the map as quickly as possible. A typical compass used for orienteering is divided into 360 degree where 0 degrees is north...

*Tuesday, June 7, 2016 by Cameron*

**Child Care **

1. You're attempting to teach Brian, a preschooler, how to arrange a group of five blocks from largest to smallest. First, you explain what you want him to do; then you do it yourself so he can see what he's supposed to do. As Brian attempts to arrange the blocks ...

*Tuesday, June 7, 2016 by Queen B *

**English**

1. He tells me that she is happy. => He told me that she was happy. 2. He has told me that she was happy. => He told me that she had been happy. 3. He will tell me that she will be happy. => He told me that she would be happy. -------------------------------- Q1: ...

*Tuesday, June 7, 2016 by rfvv*

**Math(DifferentQuestion,SameDescription)**

Orienteering is a sport that involves navigating your way to a series of checkpoints with the aid of a map and compass. The goal is to find each point on the map as quickly as possible. A typical compass used for orienteering is divided into 360 degree where 0 degrees is north...

*Tuesday, June 7, 2016 by Cameron*

**math**

Lolita saved $ 5000 in a saving account which pays 12% interest compounded monthly. Eight months later she saved another $ 5000. Find the amount in the account two years after her first saving.

*Tuesday, June 7, 2016 by omar*

**social studies**

1. What does Eid-ul-Adha celebrate? a. the birth of the prophet Muhammad b. Abraham's sacrifice of a lamb to God *** c. Muhammad's first revelation 2. What is the message of "The Tale of the Crow and the Civet"? a. Everyone should mind their own business b. ...

*Tuesday, June 7, 2016 by lun*

**Math (money) **

After spending $200 of her money on a dress. Lily spent 20% of her remaining money on a bag. She then spent $131 on a pair of shoes. In the end, she had 20% of the original amount Lily had at first. What is the original total amount she had at first? My work so far: 1/5 saved ...

*Tuesday, June 7, 2016 by user1234*

**Maths**

200 trees were planted at equal distance apart along the sides of a straight expressway. The distance between the first and the last tree is 396 m. What is the distance between the first and the fifteenth tree?

*Monday, June 6, 2016 by Deepa*

**Math**

Orienteering is a sport that involves navigating your way to a series of checkpoints with the aid of a map and compass. The goal is to find each point on the map as quickly as possible. A typical compass used for orienteering is divided into 360 degree where 0 degrees is north...

*Monday, June 6, 2016 by Cameron*

**Math**

Orienteering is a sport that involves navigating your way to a series of checkpoints with the aid of a map and compass. The goal is to find each point on the map as quickly as possible. A typical compass used for orienteering is divided into 360 degree where 0 degrees is north...

*Monday, June 6, 2016 by Cameron*

**French Check Ms. Sue**

Please check this. Thank you! 1. France is a country in Asia. true false*** 2. There are many countries in Africa where French is one of the principal languages of the people. true false 3. Québec, in Canada, is a French speaking part of Canada. true*** false 4. The ...

*Monday, June 6, 2016 by Mame*

**Statistics **

If is confirm that two thirds of the students of a college are females, calculate the probability that on entering the college, the first two students one meet are (i) the same gender (ii) different gender

*Monday, June 6, 2016 by Danbaba*

**math**

If it is confirmed that, two thirds of the students of a COLLEGE are female, calculate the probability that on entering the college, the first two students one meet are; (i) The same gender (ii) Different gender

*Monday, June 6, 2016 by danbaba *

**Of Mice and Men Essay (Help!)**

Write a 5 paragraph essay that explains how George tries to take responsibility for taking care of Lennie but fails. I know I need to come up with a thesis statement first, but I am not sure how to do so with this kind of prompt. I'm taking a wild chance here, but how does...

*Monday, June 6, 2016 by Victoria*

**maths**

A man has certain number of oranges.he divides them into two lotsA and B.he sells the first lot at the rate of Rs.2 for three oranges and the second lot at the rate of Re.1 per orange and gets a total of Rs.400.if he had sold the first lot at the rate of Re.1 per orange and ...

*Monday, June 6, 2016 by lolita*

**MATHS **

d/f coes each consisting of 5 characters are to be generated. In each code the first two characters are A or B and the remaining three characters are any of the digits 0,1,2,...9 How many distinict codes be generated so? please tell me the answer

*Monday, June 6, 2016 by abu beye erga*

**math**

The sum of three numbers is 89 . The third number is 3 times the second. The first number is 9 more than the second. What are the numbers?

*Sunday, June 5, 2016 by Zoey *

**Algebra 2**

Find three consecutive odd positive integers such that 3 times the sum of all three is 152 less than the product of the first and second integers

*Sunday, June 5, 2016 by Casey*

**Physics I (Classical)**

At some instant, a particle traveling in a horizontal circular path of radius 7.50 m has a total acceleration with a magnitude of 16.0 m/s^2 and a constant tangential acceleration of 12.0 m/s^2. Determine the speed of the particle at this instant and (1/8) revolution later. I...

*Sunday, June 5, 2016 by Victoria*

**Physics I (Classical)**

At some instant, a particle traveling in a horizontal circular path of radius 7.50 m has a total acceleration with a magnitude of 16.0 m/s2 and a constant tangential acceleration of 12.0 m/s2. Determine the speed of the particle at this instant and (1/8) revolution later. I ...

*Sunday, June 5, 2016 by Victoria*

**Chemistry**

An aqueous solution that 2.00 M in AgNO3 is slowly added from a buret to an aqueous solution that is 1.00×10−2 M in Cl− and 0.260 M in I−. When the second ion begins to precipitate, what is the remaining concentration of the first ion? I know that the ...

*Sunday, June 5, 2016 by Sydney*

**English**

Hello. Dear Ms.Sue, I would be very grateful for your advice. 1) Do you think it's possible to say "the holistic phenomenon of science" (meaning "science as a whole")? 2) Do you think I used the articles correctly in the following "the interaction ...

*Sunday, June 5, 2016 by Ilma*

**math**

At a bus stop 20 students were standing in four groups. The first group contained four students more than the second. The second group contained one student less than the third. The fourth group contained twice as many students as the second group. How many students were in ...

*Sunday, June 5, 2016 by deezenut*

**Science**

A machine has velocity ratio of 5 and is 60% efficient. What effort would be needed to lift a load of 200N with tge aid of this machine?

*Saturday, June 4, 2016 by Selasi*

**Math**

Two boats leave the same place at the same time. The first sails in a straight line N70°W at 45 miles per hour and the second goes in a straight line S23°E at 57 miles per hour. After 1 hour, how far apart are the boats, to the nearest tenth of a mile?

*Saturday, June 4, 2016 by John*

**Math - Year 10 - Simult. Equations**

Q) one number is 9 less than three times a second number. If the first number plus twice the second number is 16, find the two numbers.

*Friday, June 3, 2016 by ^ ^*

**advanced science**

A 230 kg steel crate is being pushed along a cement floor. The force of friction is 480 N to the left and the applied force is 1860 N to the right. What is the acceleration of the crate? (Hint: remember to find net force first) a=6.00 m/s2 a=28.1 m/s2 a=8.10 m/s2 a=6.0 m/s2

*Friday, June 3, 2016 by Beth*