Janessa73
Janessa73
27-03-2015
Mathematics
contestada
5x+2y=21-x-y=-9 what is the answer
Respuesta :
Panoyin
Panoyin
04-04-2015
5x + 2y = 21 ⇒ 5x + 2y = 21
-1x - 1y = -9 ⇒
5x + 5y = 45
-3y
=
-24
-3 -3
y = 8
5x + 2(8) = 21
5x + 16 = 21
- 16 - 16
5x
=
5
5 5
x = 1
(x, y) = (1, 8)
Answer Link
VER TODAS LAS RESPUESTAS ( 79+ )
Otras preguntas
What benefits resulted the relationship of the french and the native americans in the great lakes and st. lawrence river region?
There are 156 laptops and desktop computers in a lab. There are 8 more laptops than desktop computers. What is the total number of laptops in the lab?
Is there anywhere in the constitution that says separation of church and state?
How is the microflora population difference between regions?
Explain the difference between hybrid atomic orbitals in valence bond theory and lcao molecular orbitals in molecular orbital theory
Non example of a Mass Number
Todd's friend Olivia is flying her stunt plane at an elevation of 6.3 km. From the ground, Todd sees the plane moving directly toward him from the west at a 49°
How does the orbital velocity of the earth compare to the of mercury?
Write a journal entry from the point of view of a sailor leaving for his first journey.
Which of the following formulas could be used to find the area, A, of a triangle with base b and height h? A = bh A = 2b + 2h A = 1/2 bh A = 1/2b + 1/2h
