# 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

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?

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

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

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.

6. ## physical science explorations

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

7. ## maths

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

8. ## maths

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

9. ## maths

what is the distance around this rectangle?

10. ## maths

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

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?

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,

13. ## maths

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

1 _ 5/8 =

15. ## maths

(5 cm× 3) _ 121/2cm

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