# Posts by tony

Total # Posts: 959

**science**

Two objects slide over a frictionless horizontal surface. The object A with a mass of 5000g is moves at a speed of 4.5m/s toward the object B (mB= 2500g) which is initially at rest. After the collision, both objects are directed to 30O on either side of the original line of ...

*March 13, 2017*

**science**

Write the structural formula of 2,3,5-trimethyl-4-propylheptane.

*March 13, 2017*

**science**

1 litre of coffee at 80oC need to be cooled to 40oC. Assuming that all the ice melts and no heat is lost to the environment. Take the specific heat capacity of coffee to be 4200J/kgK, density of coffee to be 1000kg/m3 and latent heat of fusion of water to be 3.34 x 105 J/kg. ...

*March 13, 2017*

**basic science**

1 litre of coffee at 80oC need to be cooled to 40oC. Assuming that all the ice melts and no heat is lost to the environment. Take the specific heat capacity of coffee to be 4200J/kgK, density of coffee to be 1000kg/m3 and latent heat of fusion of water to be 3.34 x 105 J/kg. ...

*March 13, 2017*

**math**

1 litre of coffee at 80oC need to be cooled to 40oC. Assuming that all the ice melts and no heat is lost to the environment. Take the specific heat capacity of coffee to be 4200J/kgK, density of coffee to be 1000kg/m3 and latent heat of fusion of water to be 3.34 x 105 J/kg. ...

*March 13, 2017*

**Physics**

The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of 4.50 A. The radius of cross-section A1 is 0.300 cm. (a)What is the magnitude of the current density across A1? A: 1.59155e2 using J=I/((r^2)pi) (b) If the current density...

*March 13, 2017*

**Algebra**

I have to implify completely without writing complex fractions: (4y^-3/5x^-4)^2

*March 9, 2017*

**Long Division**

Need desperate help with this question! (x^3-13x-18)/(x-4)

*March 7, 2017*

**Math**

$5 per movie, + $3 per each late day. A movie that is 2 days late, then, is: $ ( 5 + 3 + 3) = $ 11 Now that we know the cost per movie, we need to know how many movies were rented. Total cost was 33. Each movie was 11. Then, 33/11 = 3 movies rented.

*February 26, 2017*

**Algebra Word Problem**

Solve algebraically using one variable: Find three consecutive odd integers such that the product of the first integer and the third integer is equal to nine more than twelve times the middle integer.

*February 20, 2017*

**Algebra**

The perimeter of a rectangle is 46 inches, and the area is 120 square inches. Find the length and width of the rectangle.

*February 20, 2017*

**Algebra**

Solve algebraically using one variable: Find three consecutive odd integers such that the product of the first integer and the third integer is equal to nine more than twelve times the middle integer.

*February 20, 2017*

**Algebra**

Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its width.

*February 20, 2017*

**Math Algebra**

Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its width.

*February 20, 2017*

**Algebra**

Find All Real Numbers 4x3 = 16x (4x cubed)

*February 18, 2017*

**Algebra**

One of the polynomials below cannot be factored using integers. Write “prime” for the one trinomial that does not factor and all the factors for the two that do. a) x2– 5x + 6 b) x2+ x + 6 c) 2x2– 2x + 12

*February 14, 2017*

**Algebra**

Solve the following algebraically using one variable: Find three consecutive even integers such that the product of the smallest integer and the middle integer is eight less than eleven times the larger integer.

*February 14, 2017*

**science**

A 2.4-kg pile of aluminum(? = 2.70 g/cm3)cans is melted, then cooled into a solid cube. What is the volume of the cube?

*February 6, 2017*

**Algebra**

Solve for B: 3b = a(B + b)

*February 6, 2017*

**Algebra Word Problem**

A student has grades of 87, 94, 89, and 92 on four of the five unit tests in a course. Let x represent the grade on the fifth test. This must be a whole number. An average, which can be a decimal, of more than 90 is desired. a) Using this information, write an inequality using...

*February 6, 2017*

**Algebra**

The sum of two different positive integers is 123. The larger integer is four more than six times the smaller one. What are the two integers?

*February 6, 2017*

**Spanish **

I was hoping some one could check these reading response answers for grammar. It was the story la dama del alba. En español, escribe un resumen de un párrafo relatando lo que ha pasado en las primeras 10 páginas de ‘La dama del alba’. (5 points) ...

*February 6, 2017*

**Math**

A recipe calls for 2 2/4 cups of raisins but Julie only has 1/4 cup measuring cup.how many 1/4 cups does Julie need to measure out 2 2/4 cups of raisins?

*February 2, 2017*

**Maths**

12 players to play a snooker game over 11 weeks . Who plays who each week?

*January 27, 2017*

**chemistry**

Diamagnetic

*January 24, 2017*

**physics**

Hello, could anyone help with this excersise of Harmonic Motion? I have to show that a block of mass "m" that is attached at the top of a frictionless inclined plane using a string of "k" constant , performs simple harmonic motion... Well doing the the ...

*January 17, 2017*

**Math**

A notebook costs 4 times more than a pencil. The pencil is 30gh less than the note book . What is the price of the pencil

*January 12, 2017*

**Math**

the half-life of iodine-131 is 8 days. how much iodine-131 will be left After 35 grams sample after 32 days?

*December 15, 2016*

**la**

when writing a personal narrative which point of view should you use

*December 9, 2016*

**Algebra**

Solve the following equation: 9z^2+34=36z The solutions are:

*October 26, 2016*

**Math**

Three numbers form a g.p.if the first and third numbers are 5 and 245 respectively, find two possible values for the middle number.

*October 20, 2016*

**Math**

Three numbers form a g.p.if the first and third numbers are 5and245 respectively,find two possible values for the middle number.

*October 20, 2016*

**Math**

Tickets to a concert cost $12 for adults and $8.50 for students. A total of 950 people paid $10175. How many adults were at the concert

*October 17, 2016*

**Geology**

Which of the following pieces of evidence supports the plate tectonic theory? A. Ocean-floor sediments are oldest at the ridge crest. B. The stripe patterns of high- and low-intensity magnetism are mirror images on both sides of an oceanic ridge. C. Ocean-floor sediments are ...

*October 16, 2016*

**Physics (Sound)**

Cellist Yo-Yo Ma plays a note at 250 Hz. A studio technician performs an analysis of the frequency spectrum and reports that she measured the SIL of its peaks (those of the frequency spectrum): 63 dB at 250 Hz, 58 dB at 500 Hz, 56 dB at 750 Hz, and 51 dB at 1000 Hz. Assuming ...

*September 22, 2016*

**Maths**

One number is 8 more than twice another number. Find the numbers if their sum is 50

*August 27, 2016*

**Maths**

Moss and Roy both decide to go out for a 2 course dinner. Moss' meal cost twice as much as Roy's meal, however Roy spent $3 more than Moss for his dessert. Moss spent $11 on his desert. The bill came to $75. How much did Roy spend for his meal and dessert?

*August 7, 2016*

**math**

What is the base in the power 9

*August 7, 2016*

**precalc**

Letf(x)=2x2 –5 and g(x)=x+4. (a) Find the composite function ( f o g)(x) and simplify. Show work. (b)Find (f og)(3).Showwork.

*July 7, 2016*

**precalc**

Suppose that cos θ = 12/13 and that θ is a Quadrant IV angle. (a) Find the exact value of sin θ. Show work. (b) Find the exact value of sin 2θ. Show work.

*July 7, 2016*

**precalc**

A projectile is launched from a platform 10 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 10 feet.

*July 7, 2016*

**maths**

the sum of a number and its square is one and a half times their difference. what is the number?

*June 7, 2016*

**Math**

Thank you

*June 1, 2016*

**Math**

How do I work out this problem 8 3/4 + 2 1/2 please help me.

*June 1, 2016*

**Matt**

The area of a curved surface of a d battery with a diameters of 3.2 centimeters and a height of 5.6 centimeters h

*May 26, 2016*

**Calculus (Integration proving)**

Show that 0 <= [(integral)(integral, r to none)sin(pi)xcos(pi)y dA] <= 1/32 where R = [0,1/4]x[1/4]x[1,2]. Thank you.

*May 20, 2016*

**algebra**

The sum of 3 numbers is 24. Twice the smallest number is 2 less than the largest number and the largest number is equal to the sum of the other two. what are the three numbers?

*April 28, 2016*

**life orientation**

identity you 3 human rights violation

*April 17, 2016*

**Chem**

How many grams of oxygen are there exactly in 100.0 g of carbon dioxide?

*April 5, 2016*

**Math**

I think Patrick is right!

*March 2, 2016*

**Math**

but Matts house is the gray house because Justin lives next to math so we can assume that Matts house is grey.

*March 2, 2016*

**Mathematics**

A curve is defined parametrically x = 1 - √3 sin(2s) y = cos(2s-1) What is the gradient at s=(pi/6)

*March 2, 2016*

**Mathematics**

Parametric Equations x = 9s^2 - 1 y = 1 - 8s^3 Find the cartesian equation?

*March 2, 2016*

**Math**

Parametric Equations x = 9s^2 - 1 y = 1 - 8s^3 find dy/dx in terms of s find the coordinates of stationary points

*February 28, 2016*

**Mathematics**

Parametric Equations x = 9s^2 - 1 y = 1 - 8s^3 find dy/dx in terms of s find the coordinates of stationary points

*February 28, 2016*

**Math**

A blimp flies at 60mph. A round trip of 40miles into the wind and 40 miles with the wind takes 90 minutes. What is the speed of the wind?

*February 16, 2016*

**Calculus**

An object moves from left to right along a parabolic shaped path y=(1/4)x^2. At the point (-2,1) the speed is 1. What normal acceleration is the object experiencing at that point?

*February 16, 2016*

**physics**

A 82 kg runner with a speed of 5.6 m/s makes a sharp turn with a radius of 1.1 m to avoid a collision. What is the magnitude of the frictional force (in N) the ground exerts on the runner during the turn?

*February 10, 2016*

**physics**

A spring is stretched by 8 cm when a force of 2 N is applied. If a force of 5.8 N is applied, how many additional cm does the spring stretch? would it be 8/2 =4*5.8= 23.2

*February 10, 2016*

**math**

7 kids and 2 adults are going to the circus. Kid's tickets are on sale for only half the price of adult tickets. The total cost is $70. How much is one kids ticket? How much is one adult ticket?

*February 10, 2016*

**Physics**

Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high

*February 8, 2016*

**Is444**

A newspaper carrier has $5.30 in change. He has ten more quarters than dimes but two times as many nickles as quarters. How many coins of each type does he has?

*February 6, 2016*

**farm disease**

explain the mechanisms as test involved in vaccinating birds against a named disease with special infacises on immunity build up

*February 4, 2016*

**farm disease**

illustrating with two named disease, describe their clinical signs and give confirmative diagnoses of each using pathognomic signs

*February 4, 2016*

**genetics**

a man with blue eye married a girl with broun eye and the mother of the girl has blue eye. What is the probability that their children will have blue eye

*February 4, 2016*

**Language**

I mean A

*January 22, 2016*

**Maths**

The 7th term of an a.p is 11 and the nth term is 3. Find the first five term

*January 19, 2016*

**Physical Education**

^you are corrrect

*December 7, 2015*

**Science.**

Because it was part of the three other time periods that basically came together.

*December 2, 2015*

**Mathematics**

Solve tan2x = 5sin2x Giving all solutions in the interval 0 ≤ x ≤ 180°

*November 18, 2015*

**physics**

ChangePE + changeKE = 0. the change in potential energy of electron is = dPE = qdV = (-e)dV. The change in kinetic energy of electron is = 1/2mV^2 - 0 = 1/2mV^2. put these together and get. (-e)dV + 1/2mV^2 = 0. 1/2mV^2 = (e)dV. mV^2 = 2(e)dV. V^2 = 2edV/m. Insert the figures ...

*October 25, 2015*

**Biology**

How much sterile saline would you have to add to add to 0.25 mL of a serum sample in order to prepare 1/50 dilution of the serum?

*October 20, 2015*

**English**

According to An Inconvenient Truth, what is the role of infrared radiation in global warming?

*September 22, 2015*

**hudson ntsan'wisi**

assess the extent to which bad road use has a direct impact on the physical,emotional, social and economic aspects to the family,the community and the country.

*August 27, 2015*

**Psychology**

Dissociation and selective attention are two possible explanations for the phenomenon of

*August 8, 2015*

**math**

85600

*August 5, 2015*

**Algebra 2**

Thank you so much, that was very helpful:)

*July 23, 2015*

**Algebra 2**

Hey, I just have two questions, Thanks. 1. Find the exact solutions of x² - (y - 6)² = 36 and y = -x² 2. Solve the system,4x² + y² = 20 and y = 4x.

*July 23, 2015*

**Geog**

Would someone please help me with this? Or at least tell me the formula I should be using? I've been trying to get help with this for four days now. I'm VERY frustrated. Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain. The initial ...

*July 9, 2015*

**math**

What is the volume of a regular pyramid having a base area of 24 square inches and height of 6 in

*June 29, 2015*

**grammar**

Which is the correct answer? I think it is A, but would like a second opinion. It was not _____ who left the door unlocked this morning. A. I B. me C. myself

*June 24, 2015*

**grammar**

Which one has the correct pronoun? The team of reporters stunned their audience when the results of the election were revealed. The team of reporters stunned its audience when the results of the election were revealed.

*June 24, 2015*

**chemistry**

1. Unless otherwise instructed, you may use the periodic table in the Chemistry: Problems and Solutions book for this test. You also may use the formulas on pages 238 243. A student increases the temperature of a 556 cm3 balloon from 278 K to 308 K. Assuming constant pressure...

*June 15, 2015*

**math**

Question 5.5. Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet above the ground. How long will it take the object to hit the ground? (Points : 1) 1 second 2 seconds 3 seconds 4 seconds i think its 4 sec

*June 11, 2015*

**math**

Question 5.5. Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet above the ground. How long will it take the object to hit the ground? (Points : 1) 1 second 2 seconds 3 seconds 4 seconds

*June 11, 2015*

**math**

Question 2.2. The height of a triangle is 5 m less than its base. The area of the triangle is 42 m2. Find the length of the base. (Points : 1) 12 m 11 m 8 m 7 m i think it's 12m

*June 11, 2015*

**english**

a, it think i figured it out

*June 11, 2015*

**english**

Question 28.28. Identify the sentence that is not punctuated correctly. (Points : 5) "Why did he call you “Bug” just then? Is that your nickname?" she asked. "Wait," she called, "I've still got to find a copy of the poem ‘Fire and ...

*June 11, 2015*

**Algebra**

I'm trying ti find the correlation coefficient for the following: The scores of 10 students on their midterm exam (x) and on their final (y) yielded the following data. Σx = 638 Σx2 = 43,572 Σy = 690 Σy2 = 49,014 Σxy = 44,636 Is the answer 0.547? ...

*June 3, 2015*

**math**

On August 18, Sullivan Company received an invoice in the amount of $6,700, having terms of sale of 4/15 EOM. What is the discount date?

*May 20, 2015*

**anatomy and physiology**

1)Provide the name and chemical symbol of 4 chemical elements you find in the human body. Select 1 of the 4 chemical elements, make the drawing of the atom and label the nucleus, protons, neutrons and electrons. 2)Make a drawing showing the molecular structure (it represents/...

*May 17, 2015*

**Chemistry**

a gas occupies 2 m3 at 100k and exerts a pressure of 100kpa. What volume will the gas occupy if the temperature is increased to 400.0k and the pressure is increased to 200.0kPa?

*May 4, 2015*

**Introduction to business**

2. Ida works on creating ways to ensure that customers receive goods at the right time and correct location. Ida is involved in her firm's ________ strategy. A. pricing B. transportation C. product D. promotion 3. Mario is part of a strategic planning team. He has ...

*May 1, 2015*

**Introduction to business**

1. In which stage of the product life cycle are profits at their highest? A. Introductory stage B. Decline stage C. Maturity stage D. Growth stage

*May 1, 2015*

**math**

What is the root of 345 without the use of tables?

*April 21, 2015*

**physics**

I can answer your question satisfactorily. I can help you with your assignments. Kindly email me midborn71 at g mail dot com for any assistance you may want. Thanks

*April 21, 2015*

**Physics**

The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after the first skydiver but ...

*April 5, 2015*

**Math**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...

*April 1, 2015*

**painting**

why A for 2

*March 19, 2015*

**Chemistry**

Plz answer this I need this

*March 17, 2015*