radomes.openskiesproject.org
lukecoupland lukecoupland
  • 12-01-2017
  • Mathematics
Answered

simultaneous equations no idea somebody help !

simultaneous equations no idea somebody help ! class=

Verified Answer :

MissPhiladelphia
MissPhiladelphia MissPhiladelphia
  • 17-01-2017

5r + 6s = 53

25r + 3s = 49

Meaning of simultaneous is to solve by elimination

Multiply the equation 2 by -2

-2( 25r + 3s = 49)

-50r – 6s = -98

Then add the two equation to eliminate s, so the resulting equation is:

-45r =-45

r = 1

substitute r = 1 to equation 1

5(1) + 6s = 53

6s = 53 – 5

6s = 48

S = 8

Answer Link

Related Questions

Which terms could have a greatest common factor of $5 m^2 n^2$? Select two options. A. $m^5 n^5$ B. $5 m^4 n^3$ C. $10 m^4 n$ D. $15 m^2 n^2$ E. $24 m^3
What does combined like terms mean
With what theory do scientists explain the formation of our worlds landforms a theory of supercontinent drift b theory of land mass glide c theory of plate tect
When light energy hits matter what energy is formed
discuss how the following socio economic issues can be a challenge to social responsibility 1unemployment 2poverty 3human right
Which one of the following choices is a common theme found in lyric poetry equality nature humor mystery
why are autotrophs considered the basis of the food chain
Whats the difference between Connotation vs Denotation
If gxX7 divided by X 1 find g1X
Blood pressure is a cognitive process because it is observable with lab equipment true or false