Thursday
September 29, 2016

Posts by joel

Total # Posts: 297

History
which represents an aztec adaptation to their environment A. A surplus of farmed crops B.an accurate 365 day calendar C.a system of causeways D.farming in terraces
September 27, 2016

Maths
Thnx Reiny & Steve 4 d help rendered in per the past questions. Plse help in this, If the line through the point y=2x+c touches the hyperbola 4(x)^2-6(y)^2=24. Show that c=+-2sqrt5.
September 25, 2016

maths
Prove that in any triangle ABC Sin2A+Sin2B+Sin2C/SinA+SinB+SinC=8Sin(A/2)Sin(B/2)Sin(C/2)
September 24, 2016

maths
A variable tangent to the ellipse (x/a)^2 +(y/b)^2 meets the parabola y^2=4ax at L and M. Find the locus of the midpoint of LM.
September 24, 2016

maths
A Variable Tangent To The Ellipse (x/a)^2 + (y/b)^2 =1 meets the parabola y^2=4ax at L and M. Find the locus of the midpoint of L M
September 23, 2016

History
what statement best describes the government relationship with England that was in the middle colonies A. Middle colonies were all established as royal colony B.each have a different system based on the charter agreed upon with the king of England C.The king of England only ...
September 12, 2016

Physics
Given Two parallel plate capacitors with a seperation d(metres) in free space connected to a dc supply of volts,v. A dielectric material of thickness b(metres) is inserted between the plates so that a distance (d-b)m remains without dielectric. Show that the the pd per unit ...
September 7, 2016

Maths
Prove By induction that sinx + sin3x + sin5x +.... Sin(2n-1) =sin^2(nx)/sin3x
September 7, 2016

Maths
Plse Help how do you obtain the maximum value and minimum value of a quadratic equation like for , 1/11+8x-2x^2
August 12, 2016

Maths
Prove that 1+cosx+sinx/1-cosx+sinx=cotx
August 12, 2016

Physics
Explain Why the pressure of a gas in a nitrogen container falls continuously when the gas is continuously taken away while the pressure of a gas in a chlorine container remains constant until nearly all the gas is withdrawn
August 11, 2016

Maths
A right circular cone is circumscribed about a sphere of radius a .If h is the distance from the centre of the sphere to the vertex of the cone. Show that the volume of the cone is 1/3pi a^2(a+h)^2/(h-a). Find the angle of a cone when the volume is minimum
August 9, 2016

Maths
Show that the maximum volume of a cylinder of radius r which can be cut centrally from a right solid cone of height h and semi-vertical angle alpha is givenby (4pi/27)h^3tan^2alpha
August 9, 2016

Maths
Prove That Sin2A+SIN2B+SIN2C/SINA+SINB+SINC=8SinA/2SINB/2SINC/2
July 28, 2016

Maths
Prove That Sin2A+ Sin2B +SIN2C/sinA+SINB+SINC=8sinA/sinB/2COSC/2
July 28, 2016

Maths
Prove that cos3x/cosx-cos6x/cos2x=2(cos2x-cos4x)
July 28, 2016

Maths
Prove that (1+sinx-cosx/1+sinx+cosx)^2= 1-cosx/1+cosx
July 27, 2016

Maths
Solve For X if archtan(x)+archsin(x)=3/4pi
July 27, 2016

Math
k375 and k425
July 27, 2016

Maths
Please Help Differentiate Sin sqrt x from first principles
July 24, 2016

Maths
If X=loga(n), y=logc(n) where nis not equal to one . Prove that x-y/x+y=logb(c)-logb(a)/logb(c)+logb(a)
July 23, 2016

Finance
What is the monthly payment on $8,400 loan at 16.7% APR
April 8, 2016

COMPUTER
WHAT IS THE PROGRAMME IN QBASIC THAT ALLOW THE USER TOENTER HIS/HER NAME AND THEN DISPLAY A WELCOME NOTE TO THE NAME.
February 14, 2016

Math
Thanks Scott!
January 28, 2016

Math
The Distributive Property: Find the product mentally. Show the steps you used. 8*34 I know that 8*34=272 but how you do it with Distributive Property? Thanks!
January 28, 2016

One SS Question!
What was one event that helped make the US a world power? a. The country experienced the Great Depression. b. The country fought in World War I *** c. The country the Peace of Paris. d. The country fought in the French and Indian War.
January 26, 2016

english p3
mind map the Topic :a great surprise
January 24, 2016

Science
If you burn 16.5 ml of ethyl alcohol, C8 H18, that has a density of 0.789g/ml what mass of co2 is produced? I have no idea where to start.
January 10, 2016

Science
Thank you Ms. Sue!
January 6, 2016

Science
Imagine that the label on a sunscreen product reads, “Recommended by nine out of ten doctors.” No other information regarding this claim is provided. Why would a scientist tell a consumer to be wary of this statistical claim? A. Sunscreen products are ineffective. B...
January 6, 2016

math
if a 3 gram French fry accelerating at 5 meter's per second. what is he fries force?
October 11, 2015

physics help
The volume of gas îs 76cm at 27c and 800mm mercury pressure.what is the volume at s.t.p.?
October 11, 2015

science
light that has a frequency of 1.5 x 1015 Hz.
October 9, 2015

Math
Thanks Ms. Sue!
September 10, 2015

Math
A bus makes 28 stops every 2 hours. How many stops does it make in 3 hours? in 4 hours? How do you get 42 stops; 56 stops? Thanks!
September 10, 2015

alegebra
A sequence has the following pattern 3/2,4,15/2,12,35/2,24.Starting n=1 find the general term for the sequence?
April 11, 2015

chem
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.10 of sodium carbonate is mixed with one containing 4.43 of silver nitrate. How many grams of silver nitrate are present after the ...
February 23, 2015

math
If Matt filled a 2 1/5 cup container, how many 1/5 cups would he need to use??
February 12, 2015

Program Designs
The Daily Gazette accepts classified ads in several categories. For most ads, the newspaper charges 10 cents per word for the first 50 words, and 8 cents per word for every word after that. Design Visual Logic Flowchart for a program that accepts data about an ad: customer ...
January 31, 2015

polynomial
x= -2 , x= -1, x= 3 = (x 2)(x 1)(x-3) then you factorise (x0…5 3x 2)(x-3) x(x0…5 3x 2) - 3(x0…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 = 2uSin420†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 = u0…5Sin0…5420†2/2g H = 230…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
(x0…5-2x)/(x 1)x (x0…5-1)/(x0…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
kj
June 23, 2014

English
Yes u can't tell a man what to do
June 22, 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

Science(Chemistry)
spirit
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
60
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

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