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:
729
Step-by-step explanation:
Each side of the cube measures 9cm
The volume of a cube is V^3
Therefore the volume can be calculated as follows
= 9^3
= 729
Hence the volume is 729
Answer: 
Step-by-step explanation:
Let x be the price. 20% (0.20) 7.25% (0.0725)

It's directly proportional, so
m=kw
Find the value of k
900=k(18)
k= 50
Answer: m=50w