Saturday

August 29, 2015
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*