shefar0menejojaypar shefar0menejojaypar

20-12-2016
Mathematics

contestada

2 sandwiches and 1 drink is $10.00. 1 sandwich and 2 drinks is $8.00. how much is each sandwich?

Respuesta :

texaschic101 texaschic101

20-12-2016

2s + d = 10....multiply by -2
s + 2d = 8
-------------
-4s - 2d = -20 (result of multiplying by -2)
s + 2d = 8
---------------add
-3s = - 12
s = -12/-3
s = 4 <=== cost per sandwich

Answer Link

Otras preguntas

the US census bureau has a population clock on the internet. on a resent day, the United states population was listed as 310,763,136.write this number in word f

What did the disagreements between Alexander Hamilton and Thomas Jefferson create?

Simplify the following expression 1/4 (24-16x)

What is 9+10(2)-1+a a=3

use pictures numbers and words to explain another way to say 6500

Is sewer lice living or nonliving

what is 2.6 as a mixed number in simplest form?

what is 4/16 as a percentage

explain how and why relations between Native Americans and Spain were different from relations between the Native Americans and France.

what do you think was Powhatan's overall message to john smith