John Brown

Most popular questions and responses by John Brown
  1. Algebra

    Natasha is planning a school celebration and wants to have live music and food for everyone who attends. She has found a band that will charge her $750 and a caterer whoWill provide snacked and drinks for $2.25 per person. If her goal is to keep the

    asked on May 26, 2016
  2. Math (Percentages)

    Write the closest benchmark for the percent. 1. 8% 2. 52% 3. 99% 4. 87% 5. 12 percent 6. 45% I don't understand the directions. What does it mean by the closest benchmark for the percent?

    asked on May 26, 2016
  3. Chemistry

    1) 2 kg of solid copper is at its melting point. How much energy does it take to melt all the copper? Heat of fusion: 134 J/g Heat of Vaporization 5060 J/g q= mHf I know the equation but I do not understand know if this is correct. 2kg= 2000 grams

    asked on October 5, 2016
  4. Algebra

    1. Find the general rule for each arithmetic or geometric sequence. 2. Calculate the 10th term for each sequence. a) a=a sub n-1*n a sub one=9 b) a sub n=a sub n-1 + 8 a sub 1=-17 c) a sub n=a sub n-1 + 2 a sub 1=9 d) a=n*a sub n-1 a sub one=1 I don't

    asked on May 3, 2016
  5. physical science explorations

    find the net force produced by a 40 newton force and a 50 Newton force in each of the following cases 1. both forces ast in the same direction. 2. both forces act in opposite directions.

    asked on August 25, 2009
  6. physical science explorations

    Distinguish among a scientific fact,a hypothesis, a law, and a theory

    asked on August 25, 2009
  7. maths

    there are 150 children in a school . two thirds of the children have school meals. how many children is that?

    asked on November 20, 2013
  8. maths

    find the change from £3 after spending £1.40 and 80p.

    asked on November 20, 2013
  9. maths

    what is the distance around this rectangle?

    asked on November 20, 2013
  10. maths

    how much more is 18p + 17p than 2 * 15p?

    asked on November 20, 2013
  11. physical science explorations

    Two tuning forks are struck at the some time. One tuning fork has a requency of 20 Hz while the second tuning fork has a frequency of 226 Hz. How many beats will result?

    asked on August 25, 2009
  12. Physics

    i41 tinypic com/2qna74k png (add the periods) For the vectors in the figure, with a = 6.4, b = 2.5 and c = 6.87. Calculate a(dot)b calculate a(dot)c calculate b(dot)c I got 0 for a(dot)b but the same method (ac*cos(theta)) does not work for the other two,

    asked on January 26, 2016
  13. maths

    'Find the number of hour s from 11:30am to 3:30pm

    asked on November 21, 2013
  14. maths

    1 _ 5/8 =

    asked on November 21, 2013
  15. maths

    (5 cm× 3) _ 121/2cm

    asked on November 21, 2013
  1. Physics

    Thank you for responding. You have to replace the spaces with periods (.)

    posted on January 26, 2016
  2. maths

    work out 72/6 =

    posted on November 20, 2013
  3. Physical Science in Action

    Two tuning forks are struck at the some time. One tuning fork has a requency of 20 Hz while the second tuning fork has a frequency of 226 Hz. How many beats will result?

    posted on August 25, 2009