ejuness22 ejuness22
  • 23-08-2020
  • Mathematics
contestada

Consider the system of linear equations.
x+y=9.0

0.50x + 0.20y = 4.05

Find the values of x and y.

Respuesta :

Аноним Аноним
  • 23-08-2020
  • Answer:

x = 7.5

y = 1.5

  • Step-by-step explanation:

x + y = 9.0  => x = 9 - y

0.50x + 0.20y = 4.05

0.5(9 - y) + 0.2y = 4.05

4.5 - 0.5y + 0.2y = 4.05

4.5 - 4.05 = 0.5y - 0.2y

0.45 = 0.3y

y = 0.45 : 0.3

y = 1.5

x = 9 - 1.5

x = 7.5

Answer Link

Otras preguntas

In a​ 2-card hand, what is the probability of holding 2​ kings? Round your answer to four decimal places as needed.
Virtual currency is treated as property for U.S. Federal tax purposes. General tax principles that apply to property transactions apply to transactions using vi
The sum of the deviations from the mean for the set of numbers 4, 9, and 5 will equal zero.
philosophy means IMPORTANCE OF REASON Questions that philosophers asked
Glycosylated hemoglobin ( HbA1c) blood test; gives what?
Solve the equation (1/3)^x+1 = (1/9)^x+3
In addition to a displayed diver-down flag, what indicates that a diver may be below the water's surface? a) True b) False
Highest risk of CVD when sitting:A) Watching Television for extended periodsB) Reading a book or magazineC) Working on a computer with breaksD) Listening to mus
Solve for u. -10=-8+ Simplify your answer as much as possible. U= u 2 0
Section managers and supervisors are responsible to maintain and implement the _______________ in their work area and answer questions about it?