raspberrystraw raspberrystraw
  • 21-08-2015
  • Mathematics
contestada

if 5c-2b=15 and 3b-4c=12, what is the value of b+c?

(a) -27
(b) -3
(c) 8
(d) 27
(e) cannot be determined with the information given

Respuesta :

soccerabby11 soccerabby11
  • 21-08-2015
d).

using linear combinations you can add the 2 rows and it will get you b+c=27.

-2b+5c=15
3b-4c=12

b+c=27
Answer Link

Otras preguntas

0.02 repeating as a fraction
During the 1840s, which speaker provided audiences with a firsthand account of enslavement?
4321 divided by 56 showing work
The cell membrane regulates which materials are allowed to enter and exit a cell by allowing some materials into the cell, but not everything, making it _______
In a game of pool, why will the balls eventually stop after a collision?
what are some common variation techniques for motives
what is the main reason that attitudes are more often revealed in spoken rather than written language
During which decades did the US government pass all of the Indian Appropriation Acts?
All insurance is based on a principle called
consider a wooden chair and a balloon. what do these two objects have in common