nada
Most popular questions and responses by nada
Trigsine, 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 
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 
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 
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 
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 
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 
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 
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 
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 
physics
A house painter stands 3.0 m above the ground on a 5.0mlong 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 
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 
trig
If tanx + cotx =5 tgen find tan^2x +cot^2x
asked on March 30, 2018 
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 
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 
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 
Trig
a) Determine the equation of a sine function that would have a range of {y€R7
asked on July 24, 2010 
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 
Graphing
What are the steps to graphing this quadratic equation? Y=(2x)^2
asked on July 23, 2010 
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 
math
How to construct an angle of 135 degree?
asked on February 5, 2013 
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 
math
what is 80+80
asked on April 4, 2011 
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 
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 
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 
physics
find the magnitude and dirction of the resultant force of two perpendicular forces F1=3N and F2=4N
asked on May 9, 2018 
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 
Inverse functions
Solve for y to determine the inverse y=2(1/2x)
asked on July 23, 2010 
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

science !!
@Reagan no they didn't
posted on October 25, 2017 
Social Studies
Whales and seals is the answer
posted on May 30, 2017 
math
Jdjrjue
posted on November 23, 2016 
Physics
pls
posted on July 11, 2016 
Math (1 question)
whoops forgot C 2,291
posted on April 3, 2016 
Math
86
posted on March 21, 2016 
math/help please
15 minutes
posted on October 14, 2015 
U.S. GOVERNMENT
republic
posted on June 16, 2015 
chemistry
why is the hydrous copper sulfate heated to constant weight?
posted on October 2, 2012 
Science
ok.assume the water is contain in a tube of ushaped. 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 
Maths(permutation)
but the correct ans is 2520,why?
posted on May 8, 2012 
FunctionsMath
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 
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 
trig
(Tan²θ * sin²θ) + cos²θ +2sin²θ = sec²θ
posted on March 23, 2011 
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 
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 
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 
Sine, cosine law
Srry but how did u get 145?
posted on July 21, 2010 
Trigsine, cosine law
Thank you so much:)
posted on July 20, 2010 
Trigsine, 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 
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