Saturday
August 29, 2015

Posts by Edward


Total # Posts: 307

Equation
X^2-b(x-1)-1=0 find. (x)
August 27, 2015

equation on tangent of a curve need help
find the equation of a tangent of a curve at point(1,3) x^2.y^3+y^2.x^4+4x^2-14=0,i tried differentiate it n also applying this formula y=mx+b.bt i gt confuse
August 27, 2015

difficult physics i need help
calculate the relative permeability of an iron ring when the exiting current taken by the 600-turns of coils is 1.2A and the total flux produce is 1mwb.the mean circumference of the rings is 50m and the area of the cross section is 10cm^2?...
August 24, 2015

calculus
bt damon daz not the first priniciple
August 23, 2015

calculus
y=2^nx differentiate with respect to x using the first principle
August 23, 2015

critical maths problem need help!!!
show that any fuction y(t)=acosx+bsinx ,satisfied the differential equation y^"+wy=0 and also find the value of (a) and (b)
August 23, 2015

unda geometry cerious need help urgently
find the centroid of the area of the finite region enclosed by the curve y=x^(2)+1 when x-axis and the line x=0 and x=3
August 23, 2015

unda geometry
ok thanks steve,i will do just dat
August 23, 2015

unda geometry
but steve i don,t know it dat is why i posted it so that i can gt help from you guys to help me study further
August 23, 2015

unda geometry
find the centroid of the area of the finite region enclosed by the curve y=x^(2)+1, when x-axis and the line, x=0 and x=3
August 23, 2015

calculus: don't even no where to start from need help plz
i can do that 2x+4x=6x 6x=6x add -6x to both side 6x-6x=6x-6x 0=0 which automatically mean that all real no are the solution
August 23, 2015

calculus: don't even no where to start from need help plz
(1)find dy/dx of y if y=tan^(-1)1/x^2 (2) if y=3z^2.z^2 find dy/dz (3) if y=x^x show that dy/dx=x|n(x+1).. thanks
August 23, 2015

graphical geometry need help
the graph of the relation y=x^2+2x+k, passes through 2 and 0 find the value of k. plz explain
August 22, 2015

Trigonometry
Root3cosx nt root3cos
August 21, 2015

Trigonometry
Sinx+root3cos=1 if 0<=x<360
August 21, 2015

Integration
Integrate.1/root(2x-1)dx
August 21, 2015

Integration help
Integrate.1/root(2x-1)dx
August 21, 2015

algebra
If 192,x,y,3 form a geometic sequence, calculate the valuest of x and y.
August 18, 2015

sensitive probability plz help
i don,t know it that is why i ask for the solution
August 14, 2015

sensitive probability plz help
what about the (ii), (iii) ,(iv), (v)
August 14, 2015

sensitive probability plz help
These are the words that i have found so far (i)sort (ii)this (iii)shot (iv)host
August 14, 2015

sensitive probability plz help
it was a typo bt it is a (word) nt a letter,none it is hard dat is y i ask 4 the solution
August 14, 2015

sensitive probability plz help
yes (history)
August 14, 2015

sensitive probability plz help
(i):find the number of four letter words that can be formed from the letter history (ii):how many of them begin and end with a consonant (iii):how many contain the letter (Y) (iv):how many beging with (T) and end with a vowel (v):how many contain both vowel
August 14, 2015

logarithms maths
yap reiny n tanks
August 10, 2015

logarithms maths
logx+logx+n-logx/n.plz solve with explanation thanks
August 10, 2015

critical probability
in how many ways can be the first four letters of your name be arranged to form a three letter word, (i)when the letter can be repeated (ii)when the letter can not be repeated
August 10, 2015

damon
i don,t have much word to say bt tank you verymuch
August 9, 2015

damon or reiny need ur help God bless you
A rectangular face of a casting 250mmx100mm is to be machined on a sharper.if the average cutting speed is to be 20m/mins and the feed is to be 2mm/stroke,calculate the time taken to machine the face of the casting.Allow 5mm overrun at each end of the stroke
August 9, 2015

physics
scrol down a bit
August 8, 2015

physics
damon,reiny,steve,ms sue.plz get a solution 2 my question please itz urgent!!!
August 8, 2015

physics
damon,reiny,steve,plz get a solution 2 my question plz it is urgent!!!
August 8, 2015

physics
qustion(1):A rectangular face of a casting 250mmx100mm is to be machined on a sharper.if the average cuting speed is to be 20m/min and the feed is to be 2mm/stroke,calculate the time taken to machine the face of casting.allow 5mm overun at each end of the stroke. question(2):...
August 8, 2015

maths
integrate. cos7xcos3xsinxdx.plz help tanks
August 7, 2015

maths
how did u got 27 and 72 i don,t understand
August 6, 2015

maths
A shop is sending out a bill for an amount less than #100.the accountant interchange the two digits and so overcharage the customer by #45,given that the sum of the two digits is 9.find how much the bill should be?.thanks
August 6, 2015

maths
integrate x^xdx.plz explain thanks
August 6, 2015

maths
tank you reiny
August 5, 2015

maths
resolve the partial fraction:x^3+6/x^2(x+3).with explanations thanks
August 5, 2015

maths
resolve the partial fraction: x^3+6/x^2x+6.plz explain thanks
August 5, 2015

chemistry
What are the uses of azomethine?
August 4, 2015

chemistry
Please tell me any website....where I can find details of the experiment Reaction of 4-aminotoluene and o-vanillin(for preparation of azomethine)
August 3, 2015

chemistry
No no....please I want you to tell me some website....from where I can find details of this experiment
August 3, 2015

chemistry
Could you please tell me the objective, theory and mechanism,result, precautions and applications of following experiment : reaction of 4-aminotoluene and o-vanillin(preparation of azomethine)
August 3, 2015

Maths
I can battle with qustion (1), but look at 2&3 i don.t even know were to start from pls help
August 2, 2015

Maths
Question(1):Show that the curve y=x^2-3x-5 passes through the point (5,5),(4,-1),(2,-7),(0,-5) and (-t,5) calculate the gradient at each pont. question(2):given a 5by5 matrices with determinant equal zero and the same determinant of its interior element equals zero question(3...
August 2, 2015

Engineering
For what values of (¢ belongs to R) the following system of equations has (1)no solution (2)a unique solution (3)infinitely many solutions? (5-¢)x+4y+2z=4 4x+(5-¢)y+2z=4 2x+2y+(2-¢)z=2 2) Consider three planes in R3. List all possibilities of their ...
August 2, 2015

Engineering
For what values of (¢ belongs to R) the following system of equations has (1)no solution (2)a unique solution (3)infinitely many solutions? (5-¢)x+4y+2z=4 4x+(5-¢)y+2z=4 2x+2y+(2-¢)z=2
August 2, 2015

Engineering
How to solve this equation : log(base10)x - log(base10)y = 2
August 1, 2015

maths
if the price of an orange was raised by 1/2k per orange, the number of oranges a customer can buy for #2.40 wil be less than 16.what is the price of an orange
August 1, 2015

maths
qustion(1)x^x=100, find x question(2):2x+2y<4,3x+4y>6 find the value of x&y that satisfy the inequalities qustion(3):x^x=100^x find x
July 30, 2015

Maths
qustion(1):find the product of xy if x,3/2,6/7,y are in a g.p qustion(2):calculate the angle between the vector u=2i+2j and v=2i+2ji qustion(3):if the center of a circle,the tangent from X touches A&B and AC is a diameter if AOB=47 calculateBOC
July 30, 2015

maths
if the radius of a sphere decreases by 0.1%,find the percentage decreases in (i)surface area (ii)volume
July 28, 2015

Coordinate Graphing
3x + 2=y; y=5
May 24, 2015

Integers
Some typical daily low temperature for Alaska cities in February are Anchorage, 12F, Fairbanks, 14F, Kotzebue, -12F, Gulkana, -7F, and Nome -4. Find the average of these temperatures.
May 23, 2015

Integers
A hockey players play minus rating compares the number of goals scored by his or her team (plus) to the number scored by the opponents (minus) while he or she is playing. In 1986 eight players on the San Jose Sharks had an average plus-minus rating of -17. What was the total ...
May 23, 2015

Integers
Suppose Frontier City Amusement Park bought a ferris wheel for $92,000. 42,512 people paid $2.00 each to ride the ferris wheel the first year. Ignoring the cost of operating how much money did the park lose on the ferris wheel it first year.
May 23, 2015

Integers
At 11:00 pm the temperature was -9 degrees. By 7:00 am the temperature had risen 18 degrees. What was the temperature at 7:00 am.
May 22, 2015

integers
A submarine was at a depth of 225 meters below sea level. It rose 80 meters, then it dove 35 meters. How far below sea level was the submarine after ascending and descending.
May 22, 2015

Integers
A scientist measured the temperature at the surface of a 7 inch deep snow. The temperature was -27 degrees. At ground level, the temperature was 24 degrees. How much warmer was the temperature at ground level.
May 22, 2015

Math- integers
The greenhouse effect occurs on many planets. If the actual temperature on Venus is -40 degrees, the temperature with the greenhouse effect is 800 degrees. What is the difference between the actual temperature and the temperature with the greenhouse effect.
May 22, 2015

english
What does the speaker in “Remembrance” plan to do? a. Forget her beloved. b. Live in mourning forever. c. Find a new love. d. Go on with her life.
May 19, 2015

math
Todd run 8 laps around a 400-meter track on Monday, 4 laps on Tuesday, 8 laps on Wednesday, 4 laps on Thursday, and 8 laps on Friday. How many kilometers did he run?
May 19, 2015

Math
A swimming pool is 75 feet long, 45 feet wide, and 8 feet deep. It is filled to a depth of 5 feet. What is the volume of the pool?
May 19, 2015

Math
What is the volume of a coffee can that is 6.5 inches high and has a diameter of 5 inches. round your answer to the nearest tenth.
May 19, 2015

math
HOMEOWNERS IN UNITED STATES USE MORE THAN 15 MILLION POUNDS OF PESTICIDES ON THEIR LAWNS EVERY YEAR. CONVERT THIS RATE TO OUNCES PER DAY ROUNDED TO THE NEAREST WHOLE NUMBER.
May 16, 2015

PCM
Please tell me websites for online chapter wise test series for jee advanced 2015 preparation. (Chapter wise) if not then mock test papers
April 29, 2015

PCM
Are there no papers to be downloaded on the device?
April 27, 2015

PCM
From which website I can get offline test papers(chapter wise) for preparation of Jee advanced 2015.
April 27, 2015

General
Thank u so much for your help Actually I m looking for indian universities.
April 27, 2015

General
Texas university......????? I can't get the name
April 27, 2015

General
How to get into Nasa after doing aerospace engineering from India? Could you please tell me best universities for aerospace engineering other than IIT's?
April 27, 2015

physics
Why the blood pressre in human greater at the feet than in the brain?
April 6, 2015

college chemistry HARD
Worcester state: pH- log[H-]<--H20<--> H + 0H-
March 28, 2015

math
while training for a marathon Anderson is supposed to run a total of 10 miles total during the week. he ran the following number of miles from Monday to Saturday: 4 1/2, 1 2/3, 4/6, 3 1/12, 1/6 how far did Anderson run during the week?
March 25, 2015

physics
a brass rod is 2 m long at a certain temperature. what is its length for a temperature rise of 100 K, if the expansivity of brass is 18 *10^-6K-1?
March 7, 2015

Math
1. Scale is 1 in.= 3 ft. If the room is 8 inches long and 2 inches wide on a blueprint, how much will it costs to clean the carpet if the costs is $15 per square foot?
February 25, 2015

Geography
69.5197° N, 139.5250° W Ivvavik national park
January 11, 2015

chemistry
did i answer the question: Explain how one of the major concepts learned in CHM 111 applies to everyday life. One major concept that was learned in CHM 111 that applies to everyday life is stoichiometry. Stoichiometry is founded on the law of conservation of mass where the ...
January 11, 2015

ap chemistry
did I answer the question?
January 10, 2015

ap chemistry
did i answer the question: Explain how one of the major concepts learned in CHM 111 applies to everyday life. One major concept that was learned in CHM 111 that applies to everyday life is stoichiometry. Stoichiometry is founded on the law of conservation of mass where the ...
January 10, 2015

chemistry
what major concepts makes chemistry useful in everday life?
January 10, 2015

college chemistry
what major concepts makes chemistry useful in everday life?
January 10, 2015

ap chemistry
how does chemistry apply to everday life?
January 10, 2015

math
It is a 4-digit number The tens are double the ones. The thousands are double the tens. The sum of the digits is 19. What number is it?
December 8, 2014

Math
b_n=(-2)^(n-1)
November 30, 2014

marhs
A wheel is free to rotate about its fixed axle. A spring with constant k = 290 N/m is attached to one of its spokes a distance r = 23 cm from the axle, as shown in the figure. (a) Assuming that the wheel is a hoop of mass m = 490 g and radius R = 0.97 m, what is the angular ...
November 15, 2014

math
f(x)= 1/3x^5 + x^-2 + 3, then f'''(x) is.. I got f'''(x)= 20x^2-24x^-5 Can you tell me if I got this right
November 11, 2014

I need checking
Whats the 2nd derivative of 4xsecx I got 4secxtanx+8xsecxtan^2x
November 11, 2014

Math
Whats the 2nd derivative of 4xsecx I got 4secxtanx+8xsecxtan^2x
November 11, 2014

Derivatives check
find the 2nd derivative of y= 1/x +cosxsinx I got 2/x^3 - 2cosxsinx is this right or did I get this wrong
November 11, 2014

Information and communication technology
please tell me new ideas regarding information and communication technology that have not yet used in daily life..
November 7, 2014

Physics
Three particles A, B, C start from the origin from the same time, A with velocity a along x-axis, B with velocity b along y-axis, C with velocity c in xy plane along a line x=y. What should be the magnitude of c so that they always remain collinear is (a). (a+b)/2 (b). √...
November 6, 2014

physics
A 80-kg man stands on a bathroom scale inside an elevator. (a) The elevator accelerates upward from rest at a rate of 1.40 m/s2 for 1.50 s. What does the scale read during this 1.50 s interval? N (b) The elevator continues upward at constant velocity for 8.50 s. What does the ...
October 14, 2014

physics
The figure below shows Superhero hanging motionless from a rope, with Trusty Sidekick hanging below him. Superhero's mass is 89.0 kg, while Trusty Sidekick's is 58.0kg, and the mass of the rope is negligible. (a) Find the tension in the rope at a point between ...
October 14, 2014

English
Sons By John Updilike How is the tone of the narrator?
October 14, 2014

Physics
I need help setting up this problem. A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 19 m, it has dropped 58 cm from its original height when it left the racquet. What was the ...
September 30, 2014

Physics
I need help setting up this problem. While standing on the roof of a building, a child tosses a tennis ball with an initial speed of 15 m/s at an angle of 20° below the horizontal. The ball lands on the ground 2.8 s later. How tall is the building? Thank you.
September 30, 2014

Physics Repost
I need help setting up this problem. A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 19 m, it has dropped 58 cm from its original height when it left the racquet. What was the ...
September 30, 2014

Physics Repost
I need help setting up this problem. While standing on the roof of a building, a child tosses a tennis ball with an initial speed of 15 m/s at an angle of 20° below the horizontal. The ball lands on the ground 2.8 s later. How tall is the building? Thank you.
September 30, 2014

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