Most popular questions and responses by nada
  1. Trig-sine, cosine law

    Two fire stations,P and Q,are 20 km apart. A ranger at station Q sees a fire 15.0 km away. If the angle between the line PQ and the line from P to the fire is 25degrees, how far to the nearest tenth of a kilometre, is station P from the fire?

    asked on July 20, 2010
  2. Math

    The Pont du Gard near Nimes, France is a roman aqueduct. An observer in a hot air balloon some distance away from the aqueduct determines that the angle of depression to each end is 54 degrees and 71 degrees respectively the horizontal distance between the

    asked on July 20, 2010
  3. Math (1 question)

    estimate the area of a circle with a radius of 27 meters. Use 22/7 for pi. A. 258 square meters B. 1,125 square meters C. 2,291 square meters D. 5,253 square meters

    asked on April 3, 2016
  4. dynamics of catering

    1 You’re likely to encounter formal service in all of the following settings except which one? A. A gourmet restaurant C. A church outing B. A wedding D. A dinner party 2. Which of the following statements about table service settings is correct? A.

    asked on August 24, 2009
  5. physic

    The fan blades on a jet engine make one thousand revolutions in a time of 87.6 ms. What is the angular frequency of the blades?

    asked on January 20, 2014
  6. physic

    Depending on how you fall, you can break a bone easily. The severity of the break depends on how much energy the bone absorbs in the accident, and to evaluate this let us treat the bone as an ideal spring. The maximum applied force of compression that one

    asked on January 20, 2014
  7. Sine, cosine law

    The Pont du Gard near Nimes, France is a roman aqueduct. An observer in a hot air balloon some distance away from the aqueduct determines that the angle of depression to each end is 54 degrees and 71 degrees respectively the horizontal distance between the

    asked on July 20, 2010
  8. physic

    A spring lies on a horizontal table, and the left end of the spring is attached to a wall. The other end is connected to a box. The box is pulled to the right, stretching the spring. Static friction exists between the box and the table, so when the spring

    asked on January 20, 2014
  9. business law

    Goods versus Services. Fred and Zuma Palermo contacted Colorado Carpet Installation, Inc., for a price quotation on providing and installing new carpeting and tiling in their home. In response, Colorado Carpet submitted a written proposal to provide and

    asked on May 4, 2011
  10. physics

    A house painter stands 3.0 m above the ground on a 5.0-m-long ladder that leans against the wall at a point 4.7 m above the ground. The painter weighs 680 N and the ladder weighs 120 N. Assuming no friction between the house and the upper end of the

    asked on April 7, 2016
  11. biology

    how can the absence of starch in the elaborated sap be explained knowing that it is produced by photosynthesis?

    asked on January 18, 2010
  12. trig

    If tanx + cotx =5 tgen find tan^2x +cot^2x

    asked on March 30, 2018
  13. chemistry

    Calculate the pH of a buffer formed by mixing 85 mL of 0.16 M nitrous acid (HNO2, Ka = 4.6X10^-4) with 94 mL of 0.15 M sodium nitrate (NaNo2)

    asked on March 15, 2018
  14. physic

    In Concept Simulation 10.2 you can explore the concepts that are important in this problem. Astronauts on a distant planet set up a simple pendulum of length 1.2 m. The pendulum executes simple harmonic motion and makes 100 complete oscillations in 330 s.

    asked on January 20, 2014
  15. phsic

    When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion, it oscillates at a frequency of 14.2 Hz. When another object of mass m2 is hung on the spring along with the first object, the frequency of the motion is

    asked on January 20, 2014
  16. Trig

    a) Determine the equation of a sine function that would have a range of {y€R|-7

    asked on July 24, 2010
  17. Trig

    Determine the roots of the function f(x)=-2cos(3x)-1. Can you please show all the work so it is easier to understand, thank you!!

    asked on July 24, 2010
  18. Graphing

    What are the steps to graphing this quadratic equation? Y=(-2x)^2

    asked on July 23, 2010
  19. Physics

    A construction company uses a crane to lift a wrecking ball2000kg the crane can cause the wrecking ball to speed up from rest to 0.1m/s in 0.2 second what is the acceleration of the wrecking ball during this time

    asked on April 14, 2018
  20. math

    How to construct an angle of 135 degree?

    asked on February 5, 2013
  21. Maths(permutation)

    A teacher prepares 5 different books for 7 students.If each student can get one or no book from the teacher , find the number of ways of distributing the books among the students. can u explain it to me detailly.i have thought about this question for

    asked on May 8, 2012
  22. math

    what is 80+80

    asked on April 4, 2011
  23. statistics

    In a hospital 6 deliveries have been occurred. The probability that the baby is female equal 0.48 a. Find the probability distribution of the variable representing the number of female babies.

    asked on March 17, 2016
  24. education

    One of the aspects of instructional scaffolding is ownership which values the students own interpretations and requires them to argue for what they are saying. How does this aspect impact the teachers choices and decisions?

    asked on April 2, 2011
  25. Sine, cosine law

    A sail boat on lake Huron leaves Southampton and sails 20degrees west of north of 20km. At the same time, a fishing boat leaves Southampton and sails 30degrees west of south for 15 km. At this point, hot far apart are the boats, to the nearest km? ( the

    asked on July 20, 2010
  26. physics

    find the magnitude and dirction of the resultant force of two perpendicular forces F1=3N and F2=4N

    asked on May 9, 2018
  27. physics

    the velocity of a particle moving along the axis is given for t>0 by v=(32t -2t^3 ) m/s where t is in s what is the acceleration of a particle when (after t=0 ) it achieves its maximum displacement in the positive x direction

    asked on October 10, 2015
  28. Inverse functions

    Solve for y to determine the inverse y=2-(1/2x)

    asked on July 23, 2010
  29. literature

    is the character of stevens in ishi guru's novel the remains of the day skeptic, ambivalent and uncertain about going on a journey?

    asked on March 28, 2008
  1. science !!

    @Reagan no they didn't

    posted on October 25, 2017
  2. Social Studies

    Whales and seals is the answer

    posted on May 30, 2017
  3. math


    posted on November 23, 2016
  4. Physics


    posted on July 11, 2016
  5. Math (1 question)

    whoops forgot C 2,291

    posted on April 3, 2016
  6. Math


    posted on March 21, 2016
  7. math/help please

    15 minutes

    posted on October 14, 2015


    posted on June 16, 2015
  9. chemistry

    why is the hydrous copper sulfate heated to constant weight?

    posted on October 2, 2012
  10. Science

    ok.assume the water is contain in a tube of u-shaped. When there is a suituation u mentioned above happen in t=0s then,when t>0s the water level will be the same REASON: by conservation of energy (*set the lowest pt of the tube is the reference level)

    posted on May 8, 2012
  11. Maths(permutation)

    but the correct ans is 2520,why?

    posted on May 8, 2012
  12. Functions-Math

    in fact , u can substitude -5 into the x variable,and the write it like this: 2(-5)^3+9(-5)^2+k(-5)-15=0 then plz find k

    posted on May 8, 2012
  13. education

    What would an example be. Because on my handout it says provide an example of how this aspect impacts the teachers choices and decisions.

    posted on April 2, 2011
  14. trig

    (Tan²θ * sin²θ) + cos²θ +2sin²θ = sec²θ

    posted on March 23, 2011
  15. Trig

    Srry I keep asking questions, but I noticed that you left out the negative sign on the 2 when you set the equation to zero, was that a mistake or were you suppose to do it like that?

    posted on July 24, 2010
  16. Trig

    Ok I was wondering why the zero with the slash was in the equation, i have never seen that before!

    posted on July 24, 2010
  17. Trig

    Ok so how did you get x to equal 20, 140,100........ And I also don't get where 3x=60 or 100 came from, can you please explain these parts by showing the math? Thank you

    posted on July 24, 2010
  18. Sine, cosine law

    Srry but how did u get 145?

    posted on July 21, 2010
  19. Trig-sine, cosine law

    Thank you so much:)

    posted on July 20, 2010
  20. Trig-sine, cosine law

    Um the answer I was given was 5.7km or 30.5km So how wud u get these answers?

    posted on July 20, 2010
  21. Sine, cosine law

    I'm not sure if it is parllel, it dosent have a diagram so it got me confused! But I know it is not in 3D, the answer in the txtbook is 299.7m, I just need the method to get it

    posted on July 20, 2010