Most popular questions and responses by Halle
  1. Trig

    The angle 2x lies in the fourth quadrant such that cos2x=8/17. 1.Which quadrant contains angle x? 2. Determine an exact value for cosx 3. What is the measure of x in radians? ---------------- I know that quadrant 4 has 2x in it, so quadrant _____ has to

    asked on May 31, 2009
  2. Math

    Use your knowledge of exponents to solve. a) 1/2^x=1/(x+2) b) 1/2^x>1/x^2 So I know that these functions are rational functions.. and I am trying to solve for x. I tried to solve them by I keep getting stuck with the exponent 2 which is the exponential

    asked on June 7, 2009
  3. Math

    The acceleration due to gravity is inversely proportional to the square of the distance from the centre of Earth. The acceleration due to gravity for a satellite orbiting 7000 km above the centre of Earth is 8.2 m/s^2. a) write a formula for this

    asked on June 1, 2009
  4. Physics

    A)Blood flows in an aorta of radius 4.50mm at 27.5cm/s. Calculate the volume flow rate. B)Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much

    asked on April 13, 2018
  5. Math

    Hi there I need help with the restrictions on the variables of this question: Simplify. State any restrictions on the variables. log(x^2+7x+12)/log(x^2-9) So my answer is: log(x+4/x-3) which is correct. Now for the restrictions, I have: x3 However the back

    asked on June 13, 2009
  6. Social Studies

    In ancient Greece, what was the importance of the Olympics? Thanks so much to anyone who will try to help!

    asked on February 7, 2014
  7. chemistry

    A student dissolves 0.550 mol of a nonvolatile, nonelectrolyte solute in one kilogram of benzene (C6H6). What is the boiling point elevation of the resulting solution? in degrees celsius

    asked on June 1, 2010
  8. Math

    Explain how you can transform the grap of f(x)= logx to produce g(x)=log(10nx), for any n>0.

    asked on June 13, 2009
  9. Math

    Trig Identity Prove: cos(x+y)cos(x-y)=cos^2(x)+cos^2(y)-1

    asked on June 18, 2009
  10. Biology

    How do ATP and ADP function in capturing and releasing energy?

    asked on March 5, 2016
  11. Algebra 1

    Andrew is making a plan to complete a class math assignment. He has 48 problems to complete over 5 days. He decides to complete the assignment is such a way that his total number of completed problems doubles every day. He realizes that that number must be

    asked on October 26, 2014
  12. Algebra 1

    (2y^-1)^2 ---------------- (4y)^-2 The answer is supposed to be 64 but I can't seem to get it. Thanks to anyone who can help!

    asked on April 30, 2015
  13. Pre Algebre-please help!

    If there is a cylinder that is 3cm. tall and has a radius of 7.5cm. what is the surface area? Please help! Thanks!

    asked on February 26, 2014
  14. Lang. Arts//Reading

    What is the theme of the book "Kingdom Keepers", Disney After Dark? It is the first book and it is written by Ridley Pearson.

    asked on February 17, 2014
  15. Pre Algebra

    Hi, does anybody know what a quadrilateral in which opposite sides are congruent and parallel is? It's on a crossword puzzle on my math homework and is thirteen letters long and from the beginning the seventh letter is an E. Thanks so much to anyone who

    asked on February 9, 2014
  16. math percentage

    1/5 of 8300 2/3 of 10,599

    asked on October 28, 2010
  17. 5th grade


    asked on September 29, 2009
  18. 5th grade


    asked on September 29, 2009
  19. 5th grade


    asked on September 29, 2009
  20. Math

    Required to Prove the following trig identity: (cos2x)^2 + (sin2x)^2 = 1

    asked on June 18, 2009
  21. Math

    If cos A = 1/3 with 0 < A< pi/2, and sinB=1/4, with pi/2

    asked on June 14, 2009
  22. science/math

    Kelly hiked a total of 4 miles in 80 minutes. How fast was Kelly walking.

    asked on February 27, 2013
  1. Math

    you all say "dont cheat" "your stupid" but aye fake it till you make it real talk!! some people don have a choice I'm f-ing stupid so thank you for this website fr fr

    posted on November 7, 2018
  2. social studies

    what are the answers?

    posted on November 7, 2018
  3. Science Help!

    so its c? or d?

    posted on November 7, 2018
  4. Physical Science

    I mean.. dang you gotta fake it till you make it 🤷🏽‍♀️

    posted on November 5, 2018
  5. math


    posted on March 23, 2017
  6. math


    posted on March 23, 2017
  7. Math

    10 equals nobody cares

    posted on September 21, 2015
  8. Algebra 1

    I'm still super confused if anyone else can help I'd love it!

    posted on April 30, 2015
  9. Physics

    Hey Samantha, if you see this, send me a message at hallegoulding@gmail(dot)com I think we're in the same physics class :)

    posted on November 7, 2014
  10. Math

    21-3c if c=7 {substitute and solve}. so... 21-3x7 21-21 =0

    posted on February 25, 2014
  11. Pre Algebra

    Haha, ya! thank you so much steve!

    posted on February 9, 2014
  12. synonyms

    Pretending to be hurt.

    posted on February 9, 2014
  13. Social Studies

    Thanks Ms.Sue! I really needed an answer like yours. It was so helpful!!

    posted on February 9, 2014
  14. math

    Sorry I wasn't entirely sure if rounding was needed. My mistake-sorry!

    posted on February 7, 2014
  15. Health/PE

    If you do a neck stretch, you can do a type of stretch on the right side of your head and then you could do that same type of stretch on the left side. And for the calf stretch you can do calf raises with your toes pointing in and out they give a different

    posted on February 7, 2014
  16. math

    Hi I really hopes this helps. So from what I understand your asking for 11 times 12 divided by 15. So, 11 times 12=132 and 132 divided by 15 is 8.8 if you round then 9.

    posted on February 7, 2014
  17. Math

    Sorry the question is: log[(x^2+7x+12)/x^2-9)]

    posted on June 13, 2009
  18. 6th Grade Social Studies

    why was there an increase in the amount of goods produced during the industrial revoluton

    posted on June 5, 2009