# gagan

Popular questions and responses by gagan
1. ## math

Show that the minute hand of a watch gains 5 degree and 30' on the hour hand in a minute

2. ## Math

sinØ (1+ tanØ) + cosØ(1+ cotØ) = (secØ + cosecØ)

3. ## math

A highschool is planning to build a new playing field surrounded by a running track. The track coach wants two laps around the track to be 1000m. The football coach wants the rectangular infield area to be as large as possible. Can both coaches be

4. ## CALCULUS

At noon, ship A is 130 km west of ship B. Ship A is sailing east at 30 km/h and ship B is sailing north at 20 km/h. How fast is the distance between the ships changing at 4:00 PM?

5. ## cal

If h(x) = (4 + 3f(x))^(1/2) ,where f(3) = 4 and f '(3) = 3,find h'(3).

6. ## cal

Consider the following. (a) Set up an integral for the volume a solid torus (the donut-shaped solid shown in the figure) with radii br and aR. (Let a = 8 and b = 2.) dy (b) By interpreting the integral as an area, find the volume V of the torus. V =

7. ## math

A water balloon is shot into the air so that its height h, in metres, after t seconds is h = —4.9t^2 + 27t + 2.4 a)How high is the balloon after 1 s? b)For how long is the balloon more than 30 m high? c)What is the maximum height reached by the balloon?

8. ## chemistry kinetics

The rate constant is numerically the same for three reactions of first ,second and third order resp. Which reaction should be the fastest and is this for all ranges of concentrations ??

9. ## Math

-log[7.1x10^-3]

10. ## Math

A framer at a photo gallery wants to frame a print with a matte of uniform width all around the print. To make it pleasing to the eye, the area of the matte should equal the area of the print. If the print measures 40 cm by 60 cm, how wide should the matte

11. ## CALCULUS

if F(x) = f(xf(xf(x))),where f(1) = 4, f(4) = 6, f '(1) = 4, f '(4) = 5,and f '(6) = 6,find F '(1).

12. ## Science grd 9

Determine which appliance uses the most electrical energy: a clothes dryer that operates for 30 min/day or a freezer that operates for 24h/day. Please show work

13. ## Science grd 9

Calculate the cost of watching TV for 5 h at night at a rate of 8.8 cents/kW•h. The TV has a power rating of 180W. Please show work

14. ## English

What is the meaning of the following lines said in the book or play Macbeth? As whence the sun 'gins his reflection Shipwracking storms and direful thunders break,So from that spring whence comfort seemed to come Discomfort swells. It was said by sergant

15. ## math

Simplify ã12+ã18-ã27+ã50 thnx a lot any help is greatly appriceted....

16. ## Physics

A drone travels 17.0 km north, then 20.0 km west, then 21.0 km south, and finally 14.0 km east. The time for the entire trip is 1.50 h. (a) Determine the drone's total distance travelled. (b) Determine the drone's resultant displacement. magnitude_______km

17. ## K

Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y = 3e^(-x), y = 3, x = 2; about y = 6

18. ## Physics

A particle undergoes two displacements, measured from the positive x-axis, with counterclockwise positive. The first has a magnitude of 11 m and makes an angle of 67 ◦ with the positive x axis. The resultant displacement has a magnitude of 7.7 m directed

19. ## math

Product A This product will take 2 years to develop, at a cost of \$100,000 in the first year (Yr 0) and \$50,000 in the second. Revenue (benefits) in subsequent years is expected to be \$100,000 per year. Product B This product will only take a year (Yr 0)

20. ## chemistry

convert the value of the vapour pressure (149.4 torr) at 60 degree celsius to atm

21. ## precalculus II

Solve: (x-2)5^x = 5^(x+2)

22. ## precalculus II

Solve: (x-2)5^x = 5^(x+2)

23. ## Precalculus II

1. The number of hours of daylight D(t) in Halifax at day t can be approximated by the function D(t) = a sin(bt + c) + d, where t = 1 on January 1, and t = 365 on December 31. The period is one year, and the cycle starts on the vernal equinox, March 21,

24. ## Math

a trapiziod has vertices A(-2,3) B(4,1) C(-1,-1) and D(2,-2). prove that the line joining the midpoints of the non-parallel sides is the average length of the two parallel sides of the trapaziod.

25. ## need help asap, plz help! math10

a trapiziod has vertices A(-2,3) B(4,1) C(-1,-1) and D(2,-2). prove that the line joining the midpoints of the non-parallel sides is the average length of the two parallel sides of the trapaziod.

26. ## math grd 10

a trapiziod has vertices A(-2,3) B(4,1) C(-1,-1) and D(2,-2). prove that the line joining the midpoints of the non-parallel sides is the average length of the two parallel sides of the trapaziod.

27. ## Chemistry

Calculate ph value of soft drink having hydrogen ion concentration equal to 3x10^-5.

28. ## Chemistry

Calculate ph value of soft drink having hydrogen ion concentration equal to 3x10^-5.

29. ## Chemistry

Calculate the ph of 10^-8 M (HCL).

30. ## Chemistry

Will ph value of water be same at temp 25°C & 4°C? Justify it.

31. ## Chemistry

Will ph value of water be same at temp 25°C & 4°C? Justify it.

32. ## Chemistry

Will ph value of water be same at temp 25°C & 4°C? Justify it.

33. ## math

the value of a rare dime is expected to increase according to the equation, y=25x+10, wherer y is the value of the coin (in cents) after x years a)state the slope of the line and interperate its meaning b) state the y-intercept of the line and interperate

34. ## Science grd 9

The estimated average energy that I used to operate a cloths dryer for a year is is kW•h. If the average rate to operate the dryer is 7.15 cents/kW•h, what is the average cost per year.

35. ## math

how to find the LCD for 11x/yz^2, 8x/y^2z? I know the answer is yz^2 but how do you get that. can you plzz plzz explain..... this it is really important..... thnx ...... a lot..

36. ## math

Determine the exact solution algebraically. a) 2^x= 2^7. can someone plz answer this for me, thanks a lot

37. ## math

If cotalpha = root 3, calculate (sin alpha)*(cot alpha) - cos^2alpha exactly. can you plzzz help urgent because I have a major test tommorow thnx for all your help

Simplify sqrt12 + sqrt18 - sqrt27 + sqrt 50 thnx a lot any help is greatly appriceted.... these are grade 11 radical expressions and the answer for this is : - -sqrt3 + 8sqrt2

39. ## math

how to complete the square for -2x^2+3x-1? can you plz help me, and any help is greatly appricieted. thnx a lot for your effort.

40. ## Chemistry

calculate the pH at 0ml at the quivalence point and at 40ml in a titration of 25 ml of .120M formic acid with .105M NaOH (kA of formic acid= 1.8x10^-4)

42. ## Math

A small plane flying into the wind takes 3h 20 min to complete a flight of 960 km.Flying with the wind, the same plane takes 2h 30 min to make the trip. What is the speed of the plane? What is the speed of the wind? can you plz help thx I really am

43. ## Math

Flying into the wind, a plane takes 8 h to travel 5432 km from Paris to Montreal. The same plane flying with the wind from Montreal to Paris takes only 7 h. Find the speed of the plane and the speed of the wind. Can you plz answer this sir I really would

44. ## Math

A farmer has \$2400 to spend to fence two rectangular pastures.The local contractor will build the fence at a cost of \$6.25/m. What is the largest area that the farmer can have fenced for that price?

45. ## Math

FeatureShop sells 80 stereos per month at a cost of \$600 each. The manager knows that for every \$10 price increase there will be one less stereo sold per month. What price will produce the greatest revenue?

46. ## Math

Rita kicks a football. Its height h, in metres, after t seconds is given by h = —4.9t^2 + 22.54t + 1.1. To one decimal place, find the maximum height of the football and the time when it reached this height.

47. ## Math

A small plane flying into the wind takes 3h 20 min to complete a flight of 960 km.Flying with the wind, the same plane takes 2h 30 min to make the trip. What is the speed of the plane? What is the speed of the wind?

48. ## Math

A truck driver estimates that a country road rises 40 cm for every 6 m along the road.What is the angle of inclination of the road? Express your answer to the nearest tenth of a degree.

49. ## Math

Flying into the wind, a plane takes 8h to travel 5432 km from Paris to Montreal.The same plane flying with the wind from Montreal to Paris takes only 7 h. Find the speed of the plane and the speed of the wind.

50. ## Math

A water balloon is shot into the air so that its height h, in metres, after t seconds is h = —4.9t^2 + 27t + 2.4 a)How high is the balloon after 1 s? b)For how long is the balloon more than 30 m high? c)What is the maximum height reached by the balloon?

80008.3-79774.54

posted on December 8, 2018
2. ## CALCULUS

F(x) = f(xf(xf(x))) ⇒ F ′ (x) = f ′ (xf(xf(x))) · d dx (xf(xf(x))) = f ′ (xf(xf(x))) ·  x · f ′ (xf(x)) · d dx(xf(x)) + f(xf(x)) · 1  = f ′ (xf(xf(x))) · [xf′ (xf(x)) · (xf′ (x) + f(x) · 1) + f(xf(x))] , so F ′ (1) = f ′

posted on October 22, 2016
3. ## cal

9/8

posted on October 22, 2016
4. ## Math

Evaluate 12 hours 35 minutes - 4 hours 40 minutes

posted on September 14, 2016
5. ## math

find the dividing polynomials

posted on March 19, 2015
6. ## Physiology

As you turn your body and head while doing an activity like a somersault, different hair cells in the vestibule and semicircular canals change direction. When this happens, electrical signals are sent through the nerve fibers which connect to your eye

posted on November 23, 2014
7. ## Precalculus II

Thank you so much Demon sir

posted on February 4, 2014
8. ## math

thank you, I really appreciate all you're help and I was thinking the same but the book was confusing me, guess the book is wrong as usuall thanks a lot....

posted on July 6, 2009

thnx but how to simplyfy more, i also got till here.

posted on March 27, 2009
10. ## math

ok

posted on March 27, 2009
11. ## math

posted on March 27, 2009
12. ## math

that is sqrt12 + sqrt18 - sqrt27 + sqrt 50

posted on March 27, 2009
13. ## math

thnx a lot now i fully understand

posted on January 23, 2009