Sunday

January 25, 2015

January 25, 2015

Total # Posts: 250

**polynomial**

x= -2 , x= -1, x= 3 = (x 2)(x 1)(x-3) then you factorise (x0…5 3x 2)(x-3) x(x0…5 3x 2) - 3(x0…5 3x 2). Hope you can go on from here.
*January 19, 2015*

**maths**

4m = 400cm Where 1 tiles = 20cm x tiles = 400cm Now you cross multiply X x 20 = 1 x 400 20x/20 = 400/20 X = 20 tiles
*January 14, 2015*

**algebra**

2x - 3(x 4) = -5 2x - 3x - 12 = -5 -X = -5 12 -X/-1 = 7/-1 X = -7
*January 14, 2015*

**Mathematics**

Nth = a (n -1)d ¡à 9th = a (9 - 1)d 9th = a 8d 5th = a (5 -1)d 5th = a 4d 9th term of an A.P is five times the 5th term ¡à 9th = a 8d = 5(a 4d) a 8d = 5a 20d a - 5a = 20d - 8d -4a/-4 = 12d/-4 a = -3d = Relationship.
*January 14, 2015*

**physics**

Wow..thats correct Devron, i dint see that from that angle. Well thats why u're there.
*January 14, 2015*

**physics**

A) How long, i suppose thats the time Time, T = 2uSin420†2/g T = 2 x 23 x 0.6691/10 T = 31.37/10 T = 3secs. B) I suppose thats the height too. Maximum height, H = u0…5Sin0…5420†2/2g H = 230…5 x (0.6691)0…5/2 x ...
*January 14, 2015*

**algebra**

Let Type A = x Let Type B = (60 - x) Therefore Type A Type B = Totals $38.85x $30.49(60 - x) = 2004.96 $38.85x $1829.4 - $30.49x = 2004.96 $38.85x - $30.49x =$ 2004.96 - $1829.4 $8.36x/8.36 = $175.56/8.36 X = 21 Type A = 21 Type B = (60 - x) = 60 - 21 = 39
*January 13, 2015*

**algebra**

Check your next post i provided a solution, you can use the same parttern in solving this. Hope its helpful
*January 13, 2015*

**algebra**

number of pavilions seats(x) = x number of lawn seats(y) =( 1500 - x) number of pavilions seats (x) number of lawn seats (y) = $35,000 $25x $20(1500 - x) = $35,000 Hope you can go on from here.
*January 13, 2015*

**physics**

Heat gain = Heat loss (where 0.233) is the specific heat capacity of silver) Heat gain = mc(T2 - T1) = 5 x 0.233(96 - 20) = 5 x 0.233 x 76 = 88.54j
*January 12, 2015*

**math**

S.I = PRT/100 (Where P = principal, R = rate, T = time) S.I = 28 x 1 x 25 S.I = 700
*January 12, 2015*

**Math**

(x0…5-2x)/(x 1)x (x0…5-1)/(x0…5 x-6) = x(x-2)/x 1 x (x 1)(x-1)/(x 3)(x-2) =X/1 x (x-1)/(x 3) =x(x-1)/(x 3) Well hope its helpful.
*January 10, 2015*

**Integrals**

Find the Integral values of X and Y satisfying the inequality 3x + 5x ¡Ü 15, given that Y >0, Y < 3 and X > 0
*January 10, 2015*

**math**

Let Tom's pencil = x Greg's = 3/5(x) Totals = 3/5(x) x = 56 = 3x/5 x = 56 = 3x 5x = 280 = 8x/8 = 280/8 = X = 35 Therefore. Tom's pencil = 35 Greg's = 3/5(35) = 21 Tom has (35 - 21) = 14 pencils more than greg.
*January 10, 2015*

**ratio**

Ratio = 5:12
*January 10, 2015*

**science**

Heat gain = Heat loss 0.38kj = mc(T2 - T1) 0.38kj = 19.6g x 2108(T2 - (-12)) (where 2108 is the specific heat capacity of ice.) 0.38 x 1000 = 19.6/1000 x 2108(T2 12) 380 = 0.0196 x 2108(T2 12) 380 = 41.32(T2 12) 380 = 41.32T2 495 380 - 495 = 41.32T2 -116/41.32 = 41.32T2/41.32...
*January 10, 2015*

**calculus**

Yeah.. Thanks Damon! I now have an idea of how to go about that. But if you dont mind..can you give me an idea on how to go about this problem also? Solve ¡Ò 2(2x -3)0…5/0…6
*January 10, 2015*

**calculus**

Please how do i integrate this = ¡Ò (5 x⁶ + 2/x³ ) ? Thanks
*January 10, 2015*

**physics**

A locomotive is running at a constant speed of 100 km/ h. The diameter of driving wheels is 1.8 m. The stroke of the piston of the steam engine cylinder of the locomotive is 600 mm. Find the centripetal acceleration of the crank pin relative to the engine frame.
*December 31, 2014*

**physics**

A flywheel is making 180 r.p.m. and after 20 seconds it is running at 140 r.p.m. How many revolutions will it make, and what time will elapse before it stops, if the retardation is uniform ?
*December 31, 2014*

**physics**

A cage descends a mine shaft with an acceleration of 0.5 m/s2. After the cage has travelled 25 metres, a stone is dropped from the top of the shaft. Determine : 1. the time taken by the stone to hit the cage, and 2. distance travelled by the cage before impact.
*December 31, 2014*

**statistics**

find the area under the curve y=3log1.2x between x = 1.2 and x = 3
*December 18, 2014*

**Physics**

1 Angstrom = how many Coulombs?
*August 29, 2014*

**Physics**

I dont understand.
*April 4, 2014*

**Physics**

An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip? I have tried using the integration method but cannot get...
*April 4, 2014*

**CHEMISTRY URGENT!!!!**

An electron transition in a single H-atom from n=3 to n=2 results in the release of a single photon. What is the wavelength of this photon in nanometers? NEED ANSWER CUZ MINE ISNT WORKING
*January 27, 2014*

**Chemistry, due soon please help**

calculate the mass of 100 ppm of CO2 int the atmosphere if the atmospheres mass is 5.3x10^18 kg
*December 16, 2013*

**key boarding and word processing**

You want to include a title page for a report you're sending out. How should you format the title on this page?
*December 9, 2013*

**Algebra 1**

Tell whether each number in the list is a real number, a rational number, an irrational number, an integer, or a whole number. Then order the numbers from least to greatest. Square root of 64, -5, square root of 9, and 2
*September 26, 2013*

**math**

D is 30 feet above the ground.
*September 24, 2013*

**math**

A stunt motorcyclist makes a jump from one ramp 20 feet off the ground. The jump between ramps can be modeled by y= -1/640x^2 + 1/4x +20 where x is the horizontal distance (in feet) and y is the height above ground (in feet). I think a is 20 feet, but I don't know how to ...
*September 24, 2013*

**math**

The sum of two decimal numbers is 3.9 Their difference is 0.9,and their product is 3.6 What are the two numbers?
*September 24, 2013*

**MATH**

Give the number whose hundreds place is one-third of the greatest one-digit number, the tens place is twice the hundreds place divided by 2, and the three digits in the thousands period is the product of the digits in the units period.
*June 23, 2013*

**PreCalc**

sorry that should be theta-omega not omega-theta
*May 8, 2013*

**PreCalc**

If tan theta = 9/5 and cot omega = 9/5 Find the exact value of sin (omega-theta)
*May 8, 2013*

**Math**

The answer is integer
*April 30, 2013*

**Principles of Management**

Question 1 of 20 5.0 Points Which of the following is NOT a benefit of planning? A. Helps you check on your progress B. Helps you think ahead C. Helps you cope with uncertainty D. Helps you compare your results to a standard Reset Selection Question 2 of 20 5.0 Points XYZ ...
*April 22, 2013*

**Chemistry**

2. In a calorimeter, 40.0g water at room temperature (20.4 C) was mixed with 60.0 g of water that was initially 48.9 C. The resulting mixture reached a maximum temperature of 37.3 C. Calculate each of the following. a) The heat released by the hot water. b) The heat absorbed ...
*April 16, 2013*

**Chemistry**

In units of joules. And in units of calories?
*April 9, 2013*

**Chemistry**

If the temperature of 150.0g of water increased from 23.3C to 44.8C, how much heat was absorbed
*April 9, 2013*

**Chem**

The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from room temperature (20.0 °C) to 150 °C.
*April 4, 2013*

**math (Algebra)**

(c+x)squared ----------------- 2y c= -8 x= 10 y= 6
*April 3, 2013*

**math problem**

The diameter of a circle is increased by enough to increase the circumference by 20%. By what % is the area of the circle increased ? ( Hint: Try a number like t=5.)
*February 17, 2013*

**ENG1511**

He thought he could pay his school fees
*February 15, 2013*

**math**

if i have abook of 30 pages and i number each pages, how can i figure the digit number
*February 12, 2013*

**math**

if i have a book of 30 pages and i want to number each pages what will be the digit for the thirty pages
*February 12, 2013*

**Physics**

you are both retarded. its 47.2
*January 23, 2013*

**trig**

A wheelchair ramp has an angle of inclination of 10 degrees and rises to a height of 3ft. Determine the length of the ramp in feet.
*January 22, 2013*

**BIOCHEMISTRY Practical**

The concentration of the acid is o.25M
*January 16, 2013*

**trig**

Find the Opposite of the right angle where the angle is 61 degrees and the Adjacent is 10 cm.?
*December 20, 2012*

**VERY VERY URGENT SOCIAL STUDIES!!!!**

Fortunately these are common sense questions.
*December 20, 2012*

**VERY VERY URGENT SOCIAL STUDIES!!!!**

Correct sir
*December 20, 2012*

**college trig word problem**

ty
*December 15, 2012*

**college trig word problem**

A Ferris wheel has a radius of 25 feet.The wheel is rotating at two revolutions per minute.Find the linear speed, in feet per minute, of a seat on this ferris wheel.
*December 15, 2012*

**Chemistry**

You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 379.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
*December 14, 2012*

**graphing question**

how do i get the slope formula of: (4,-1) and (3,-1)? Then the Point slope form:Slope=4,passes through (1,3)?
*December 5, 2012*

**math**

3 less than or equal to 4x-3 less than 19?
*December 1, 2012*

**calculus**

The Horizontal Assymptote for the graph of f(x) = (-6x3 +2x + 5)/(x3-1) is the horizontal line with equation y=___
*November 13, 2012*

**Ratios of Similar Figures**

yes
*October 22, 2012*

**math**

Line BD bisects <ABC. m<ABD=2x+22. Find m<DBC.
*October 12, 2012*

**geometry**

Write a two-column proof. Given: 7y = 8x – 14; y = 6 Prove: x = 7
*October 12, 2012*

**Geometry**

Can you tell em if this is right? If not, can you tell me what words go where? A truth value statement can be written in the form “if P, then Q.” This “if, then” statement can be true or false. The “if” part is called the hypothesis, and the “...
*October 9, 2012*

**physics**

The mass of a roller-coaster car, including its passengers, is 481 kg. Its speed at the bottom of the track in the figure below is 17 m/s. The radius of this section of the track is r1 = 26 m. Find the force that a seat in the roller-coaster car exerts on a 45-kg passenger at ...
*October 6, 2012*

**Critical Thinking/Ethics**

Online Poll
*September 28, 2012*

**CHEMISTRY HELP ASAP!**

is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain this further and ...
*September 11, 2012*

**chemistry (need asap!)**

is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain this further and ...
*September 11, 2012*

**social studies**

What are threes major monotheistic religions in order from oldest to newest?
*May 30, 2012*

**Chemistry**

How do I calculate the mass of sodium carbonate required to neutralize 15-20 mL of 0.25M HCl at the stoichiometric point?
*May 17, 2012*

**Chem**

You have a 46.0 G sample of H20 at a temperature of -58.0*C. How many joules of energy are needed to heat the ice to 95.3*C?
*May 14, 2012*

**Finance 370**

A bond that has a $1000 par value (face value) and a contract or coupon interest rate of 11.5. The bonds have a current value of $1120 and will mature in ten years. The firm's marginal tax rate is 34%. Using the time value of money, calculate the yield to maturity on a ...
*April 9, 2012*

**Chem **

How would the reducing agent NaBH4 compare with that of LiAlH4?
*March 15, 2012*

**english**

I really need someone to help with errors. Teenagers and Driving: A Dangerous Combination Teenagers and vehicles can be a very dangerous combination. Teenage drivers are four times more likely to be involved in a motor vehicle crash than drivers of older age. According to the ...
*January 31, 2012*

**English **

I really need help with my writing. I need some to proof read a paper that I wrote. Two Career Families versus One Career Families Back in the early days the traditional working family was a one career family. The roles of husband and wife were defined and everyone did as they...
*January 28, 2012*

**physics**

How much kinetic energy does a 2000 kg traveling 70 mph have?
*January 24, 2012*

**Literature & Writing**

In Bless Me, Ultima I have some questions about the scenes where Antonio talk with Florence about sin and God in chapter 17. The page numbers are in the 190s in the small book or early 200s in the bigger book. I lots of ideas, but it's nice to have external feedback. 1. ...
*January 21, 2012*

**geometry**

The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in measure. D. Their ...
*December 1, 2011*

**geometry**

The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in measure. D. Their ...
*December 1, 2011*

**Regression analysis**

1) Salary levels are determined by a number of important factors such as the years of experience, education level, job classification, etc. Other factors that contribute to salary levels might be due to gender or racial discrimination. Discuss how a dummy-variable regression ...
*November 10, 2011*

**math**

304-152=152
*November 4, 2011*

**math**

use each of the digits 0 1 3 4 5 exactly once to write a decimal subtraction problem.the difference must be the same as one of the decimals in the problem
*November 4, 2011*

**geometry**

the amount of metal in the nut?
*October 16, 2011*

**7th grade Math **

What is 32 te/min un./s
*October 12, 2011*

**Physics 1**

5.28 seconds
*October 4, 2011*

**maths urgent**

The average mass of half the number of crabs in a basket is 350g, the average mass of the remaining crabs is 300g. If the total mass iof the crabs in the basket is 13kg, how many crabs are there in the basket?
*September 22, 2011*

**physics**

the moon orbits the earth in a circle (near enough) of radious 3.8x10^8 m, taking 27.3 days to make a complete orbit. what is the speed of the moon relative to the earth?
*September 8, 2011*

**mathsP5**

I agree but my teachers don't care and even wrong answers have to be solved by ourselves and I keep getting them wrong again tks to both of you for your help
*August 20, 2011*

**mathsP5**

There are 2 packets of flour, Y & Z.The ratio of the mass of Y to Z is 4:1. If 26g is added to Z,the ratio of the mass of Y to Z is 7:5. Find the mass of the 2 packets at first. Pls show how to solve by model method as i have not learnt algebra. tks
*August 20, 2011*

**Maths **

thanks
*August 16, 2011*

**Maths **

The breadth of a rectangular plot of land is 85% of its length. The difference between the length and breadth is 18m. A) what is the length B) what is the area
*August 16, 2011*

**Maths**

I'm sorry, I can't get it, pls help clarify. thanks
*August 16, 2011*

**Maths**

Mr T's salary is $800 less than 3 times of his wife's salary. His wife's salary is 4/10 as much as his. how much is their total monthly salary?(non-algebra method pls)
*August 16, 2011*

**maths**

16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books? Please show me a non-algebraic method of solving this.Thanks
*August 15, 2011*

**Maths**

Sorry, i need to solve this by a non-algebraic way as we have not learnt algebra yet. Can you show me how? Tks.
*August 14, 2011*

**Maths**

16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books?
*August 14, 2011*

**Maths**

ok, thanks. I get it now.
*August 14, 2011*

**Maths**

That was not the answer the teacher gave. It was $179.50 for the coat. How do I get this answer?
*August 14, 2011*

**Maths**

Mr Zubir bouught a pair of pants, a shirt and a coat. The pair of pants and shirt costs $100.90. The pants and coat costs $244.50. The coat costs 5 times as much as the shirt. How much did Mr Zubir pay for his coat?
*August 14, 2011*

**Maths**

Caharles can buy 50 oranges and 60 apples for $100. He can 100 oranges for $100. How many apples can he buy for $100?
*August 7, 2011*

**Maths**

1/7 of Matthew's allowance is equal to 3/8 of Ryan's allowance. What is the ratio of Matthew's allowance to Ryan's?
*August 7, 2011*