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

Most of the African continent is on a high _____. a. desert b. plateau

What was the political structure of the modern-day nation of Germany in the 1860s? a. By the 1860s, the modern-day nation of Germany was finally unified under o

romeo and juliet question: If Capulet's wishes are followed, how old will Juliet be when she gets married? A.13 B.14 C.15 D.17 E.18

Which of the following alternative energy sources in not inexhaustible

Gloria is digging for fossils at a geological site. She has 120 meters of rope and 4 stakes to mark off a rectangular area. Which set of dimensions will create

Which is not a way in which ideas of the Scientific Revolution were applied to the social world during the Enlightenment? a. Diderot tried to organize all knowl

The seventh-grade class is building target areas for a PE activity. The bases for the game will be in a circular shape. The diameter of each circle is 3 feet. A

find the semi monthly salary when the weekly salary is $1,200

On the Galapagos one of the members of the founder species of finches was born with a larger beak than the others. This advantageous trait spread through the po

Which descriptions of the Ottoman Empire are accurate? Choose all answers that are correct. a. at its height, included territory that is now part of Turkey, Gre