Answer:
Tienes 3 números, "x", "y", "z"
=> El primero es 20 unidades menor que el segundo:
El primero es "x", y el segundo es "y", entonces:
x = y - 20
=> El tercero es igual a la suma de los dos primeros:
El tercero es "z", entonces:
z = x + y
z = (y - 20) + y
z = 2y - 20
=> Entre los tres suman 120
x + y + z = 120
y - 20 + y + 2y - 20 = 120
4y - 40 = 120
4y = 160
y = 40
Si y = 40, entonces:
x = y - 20
x = 20
Además, z = 2y - 20
z= 60
RPTA:
x=20
y=40
z=60
Step-by-step explanation:
Answer:
x = 45
Step-by-step explanation:
We know that the sum of (x+30) and 75 are vertical angles so they are equal
x+30 = 75
Subtract 30 from each side
x+30-30 = 75 -30
x = 45
28% as a decimal would be 0.28, since it is 28 out of 100, which answers the fraction question : 28/100
