# Posts by parul

Total # Posts: 18

**math**

if x= 1¡Ì2 find (x+1/x)3

**Math**

How many ways can the letters in WILDCAT be arranged if the vowels cannot be next to each other?

**Math**

A bag contains a set of ping pong balls numbered from 1 to 12. If you reach in and randomly pull out 3 of them, what is the expected value of the sum of the numbers on the 3 ping pong balls? Thanks :)

**Statistics**

What is the appropriate sample size for a confidence interval around the sample mean if you want a margin of error of 0.8 with 95% confidence and a population standard deviation of 12.

**physics**

a train starts from rest and accelerates uniformly to achieve a velocity of 20m/sec in 10 sec.then train maintains this speed for next 200 sec.the breaks are then applied and train comes to rest in next 50 sec.calculate a)acceleration in first 10 sec. b)acceleration in last 50...

**physics**

a train starts from rest and accelerates uniformly at 100m/min^2 for 10 min.then it maintains a constant velocity for remaining 20 min.brakes are applied and train uniformly retards and comes to rest in next 5 min. a)the maximum velocity reached b)the retardation in last 5 min...

**math**

the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz

**math**

the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)6x^3+5x^2-6x. b)15x^2-51x+18. c)x^3+13x^2+32x+20. d)x^2-5x/2-3/2. e)x^3-9x. f)x^4+x^3-x-1 plz everyon help me

**math**

the volume of a cubical solid is given by following expressions.find the side of field. a)8a^3+b^3+12a^2 b+6ab^2. b)27-125a^3-135a+225a^2. c)27a^3-1/216-9a^2/2+a/4. d)x^3-1/x63-3x+3/x. plz help me till 2 o'clock...

**physics**

a train starts from rest and accelerates uniformly at 100m/min^2 for 10 min.then it maintains a constant velocity for remaining 20 min.brakes are applied and train uniformly retards and comes to rest in next 5 min. a)the maximum velocity reached b)the retardation in last 5 min...

**physics**

a train starts from rest and accelerates uniformly to achieve a velocity of 20m/sec in 10 sec.then train maintains this speed for next 200 sec.the breaks are then applied and train comes to rest in next 50 sec.calculate a)acceleration in first 10 sec. b)acceleration in last 50...

**physics**

a cyclist start from rest and accelerate uniformly to achieve a velocity of 12m/sec in 5 sec.immediately he applied brake and come to rest in next 4 sec .calculate a)distance traveled during acceleration b)distance traveled during retardation. c)total displacement during whole...

**math**

(a+b)^3+(b+c)^3+(c+a)^3-3(a-b)(b-c)(c-a)=2(a^3+b^3+c^3-3abc)

**physics**

a body moves with a uniform velocity of 2m/sec for 5 sec then velocity was uniformly accelerated and a velocity of 10m/sec was achieved in next 5 sec.then brakes were applied uniformly and body comes to rest in next 10 sec.calculate a)acceleration and retardation produced b)...

**physics**

a car traveled at uniform velocity of 20m/sec for 5 sec the brakes are applied and car retards uniformly and come to rest in further 8 sec.find a)distance traveled in first five sec b)distance traveled after breaks are applied c)total displacement during this period and its ...

**physics**

A cyclist is cycling at uniform velocity of 8m/sec for 8 sec then applies brakes and cycle come to rest in next 10 sec. calculate a)Distance traveled by uniform velocity. b)distance traveled by non-uniform velocity c)total distance traveled d)the average velocity in entire ...

**physics**

A student starts from rest from his house and accelerates uniformly at the rate of 2m/sec^2 for 30 sec then he apply break for 45 sec and come to rest at his school.how far is his school

**3rd grade math**

i am a four digit number having odd all except 9 and the digits are in ascending order

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