# math

posted by .

4C =2A + 2B , 2B = A + 3C How many C's will balance the combination of A and B

• math -

4C = 2A + 2B ----> C = (2A+2B)/4
2B = A+3C ------> C = (2B-A)/3

(2A + 2B)/4 = (2B-A)/3
6A + 6B = 8B - 4A
10A = 2B
B = 5A

into C = (2A+2B)/4
C = (2A + 10A)/4
C = 3A

etc

• math -

Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Sove for c

## Similar Questions

1. ### math ,correction

consider determining how many possible phone numbers are in an area code (repeated numbers allowed) is this a combination, permutation or neither.... my answer neither combination. combination. wouldn't it be neither because we are …
2. ### Math

a company makes combination locks with 50 numbers printed on the dial. Each lock combination is an arrangement of 3 different numbers. How many locks can the company make without repeating a combination?

Only a chemist can be trusted with the combination to the safe containing a ton of money. The combination is the pH of solution A, followed by the pH of solution C. (for example: is the pH of solution A is 3.47 and the pH of solution …
4. ### Math

"The combination is the seventh, ninth, and eleventh numbers in a sequence that begins 1,1,2,3,5,8,13, and so forth" What is the combination?
5. ### Chemistry

Complete and balance this equation for a combination reaction. Be + O2 ==> Would it be Be + O2 ==> BeO2 ?
6. ### math

Which should be used a permutation or combination?
7. ### Algebra

Guess the 4-digit combination. An X stands for a correct digit in its correct place in the combination and an O stands for a correct digit out of its corect order. 8256 OX Two of the four digits 8,2,5,6 appear in the final combination(one …