Step-by-step explanation:
PRIMERO encuentras x
3x + 2y = 56
<u>5x - 2y = 24</u>
8x = 80
x = 80/ 8 = 10
LUEGO PARA ENCONTRAR y TOMAS cualquiera de las dos DE LAS
ECUACIONES Y SUSTITUYES x
3(10) + 2y = 56
30 + 2y = 56
y = 56 - 30/2 = 13
Answer:
basically the number inside the 1st f( )of each problem must be plugged into all the it's in its equation an example would be with the first problem:
Step-by-step explanation:
1st:plug in the number inside the f(x) function into all the x's in the equation so #1 would look like this: f(x)=2-4, then solve for x
2nd your solution for #1 would be f(x)=-2
Total marbles: 1+ 4+3 = 8
Picking a blue marble = 4/8 = 1/2
Picking a second one: 1/2 x 1/2 = 1/4 probability