izboredme izboredme
  • 04-03-2021
  • Mathematics
contestada

Please help I have 30 mins

Please help I have 30 mins class=

Respuesta :

uniconevip
uniconevip uniconevip
  • 04-03-2021

Answer:  0.6 in 10 % ; 0.4 in 15 %

Step-by-step explanation:

1. (x*10%) + (y*15%)/ x+y=12%

2. x+y = 1  x= 1-y

(0.1x + 0.15y/ x+y= 12/100) * 100

(10x + 15y/x+y = 12)*(x+y)

10x+15y= 12x + 12y

-2x=-3y

2x = 3y   2(1 - y)= 3y

2-2y=3y   2= 5y

y= 0.4

x= 0.6

Answer Link

Otras preguntas

Explain the term DNS(Domain Name System) and why it is used.
What trait do autobiography and memoir have in common?
This section of the Constitution is responsive to the needs of a changing nation. a. Articles c. Amendments b. Preamble d. Supremacy Clause The Founders cre
what is life like in cuba today?? Please help
Why job is important to us
50 is 40%of what number
what is the art of study of public speaking
Identified the pattern,192,96,48,24,...
Use less than, equal to, or greater than to complete this statement: The sum of the measures of the exterior angles of a regular 9-gon, one at each vertex, is _
what is the mass of 1 pear