kyrarix kyrarix
  • 03-12-2018
  • Mathematics
contestada

Solve the system of linear equations. What is the value of y?



9x−6y=15

6x+21y=60

Respuesta :

goldeneagle1
goldeneagle1 goldeneagle1
  • 03-12-2018

Answer:

y = 5

y = 2.2

Step-by-step explanation:

For the first one:

9x = 9 x1 = 9

9 - 6 = 3

3y = 15

15 ÷ 3 = 5

y = 5

For the second one:

6x = 6 x 1 = 6

6 + 21 = 27

27y = 60

60 ÷ 27 ~ 2.2

y = 2.2

Answer Link

Otras preguntas

why are fossils of clams more numerous than those if the worms or cnidarians ?
70-q-q-2q=80 We'll this is confusing
3)    Write an equation for a graph that is the set of points in the plane that are equidistant from the point  F(6,0) and the line x = -6.
Whats the equation of a circle centered at (7,1) that passes through (-2,10)
If x= (a^2)/b, which situation would always double the value of x? (1) Doubling the value of a(2) Halving the value of a(3) Doubling the value of b(4) Halving t
Simplify (2x + 3)(x – 4) = ?
determine the most precise name of the quadrilateral ABCD from the information given. for #13 & #14
what is the comparative and superlative of many, lazy, smooth, and rough
If y^8 = 4 and y^7 = 3/x, what is the value of y in terms of x? (A) 4x/3 (B) 3x/4 (C) 4/x (D) x/4 (E) 12/x
What is 4p-13p-p=-150 More 2 step equations. I don't get this one at all