John Brown
Most popular questions and responses by John Brown
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 
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 
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 
Algebra
1. Find the general rule for each arithmetic or geometric sequence. 2. Calculate the 10th term for each sequence. a) a=a sub n1*n a sub one=9 b) a sub n=a sub n1 + 8 a sub 1=17 c) a sub n=a sub n1 + 2 a sub 1=9 d) a=n*a sub n1 a sub one=1 I don't
asked on May 3, 2016 
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 
physical science explorations
Distinguish among a scientific fact,a hypothesis, a law, and a theory
asked on August 25, 2009 
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 
maths
find the change from £3 after spending £1.40 and 80p.
asked on November 20, 2013 
maths
what is the distance around this rectangle?
asked on November 20, 2013 
maths
how much more is 18p + 17p than 2 * 15p?
asked on November 20, 2013 
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 
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 
maths
'Find the number of hour s from 11:30am to 3:30pm
asked on November 21, 2013 
maths
1 _ 5/8 =
asked on November 21, 2013 
maths
(5 cm× 3) _ 121/2cm
asked on November 21, 2013

Physics
Thank you for responding. You have to replace the spaces with periods (.)
posted on January 26, 2016 
maths
work out 72/6 =
posted on November 20, 2013 
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