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

About how much does the plant grow? 4 2 1/2 3 2

i need the answer and work for this please

For an alloy that consists of 93.1 g copper, 111.7 g zinc, and 4.0 g lead, what are the concentrations of (a) Cu, (b) Zn, and (c) Pb in weight percent? The atom

Which event happened at the end of the story "The Three Bears?"

What are 2 numbers that make 49, i need help with my math homework. I’m in 3rd grade

Pure nitrogen (N2) and pure hydrogen (H2) are fed to a mixer. The product stream has 40.0% mole nitrogen and the balance hydrogen. The product flow rate is 1,36

I need help please?!!!

SV perpendicular RT RSU=(17x-3) and UST=(6x-1) find each measure

Can someone help me with this question?

What does Leif Ericsson’s settlement in Canada suggests? Select all that apply? A. The Vikings were more curious than most EUROPEANS. B. The Vikings had the tec