Posted by wendy on Tuesday, October 26, 2010 at 9:39pm.
(1) c = 3d - 27
(2) 4d + 10c = 120
there are several ways to solve this problem (system of linear equations),, but in this case, we substitution method since in equation (1), variable c is expressed in terms of the other variable d,, we then substitute c from equation (1) to equation (2):
4d + 10(3d-27) = 120
4d + 30d - 270 = 120
34d = 390
d = 195/17
*substituting this value of d to either equations (in this case, to (1)):
c = 3d - 27
c = 3(195/17) - 27
c = 585/17 - 27
c = (585 - 459)/17
c = 126/17
so there,, :)
How do you solve this problem? V = Bh
Solve each formula for the variable shown in RED. In this problem the variable in RED is the letter B.
Related Questions
algebra 1b - Solve each system using substitution. check your solution. a = 2/3b...
Algerbra 1B - Solve Each Sysem Using Substitution. Check ach solution. a = 2/5b...
Algerbra 1B - Solve Each Sysem Using Substitution. Check ach solution. a = 2/5b...
Chemistry (Need) 7:00 - What characterizes the electron configurations of ...
algebra - Can someone teach me the steps in finding these like terms I am not ...
Pre Cal - Let P be the point on the unit circle U that corresponds to t. Find ...
Chemistry - How many electrons would be required to fill the following sublevels...
Chemistry - How many electrons would be required to fill the following ...
Chemistry - Write the correct electronic configuration of Pd,Ag,Pt&Au. I ...
MATHS - Could you please explain the quickest way to calculate these questions? ...
For Further Reading
