dianewade15 dianewade15

03-02-2015
Mathematics

contestada

How do I solve x+4y=22
-x+5y=23

Respuesta :

03-02-2015

x+4y=22
-x+5y=23 (+)
9y=45
y=5

x+4*5=22
x=22-20
x=2

Answer Link

03-02-2015

{ x + 4y = 22 ( + x - x = 0 )
{ - x + 5y = 23

4y + 5y = 22 + 23
9y = 45
y = 45
9
y = 5

x + 4y = 22
x + 4 . 5 = 22
x + 20 = 22
x = 22 - 20
x = 2

S = { 2 , 5 }

Answer Link

Otras preguntas

Which of the compounds found in wood are difficult to degrade (or break apart)? (select all that apply.)?

What do most of the cities have in common in terms of the geographical features of their location?

What is the domain and range of f(x)=3x?

-(4p-19)=27 solve for p show all work please

Propane (C3 H8 (g), Hf = –103.8 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , Hf = –393.5 kJ/mol ) and water (H2 O, Hf = –241.82 kJ/mol) according

my book is 52 pages. I have already read 18 pages. I plan to read 10 pages each day until I finish the book. Estimate about how many days it will take to finish

The medial and lateral malleoli of the leg are similar to what bone markings of the forearm?

How does hibernation maintain body temperature?

Which css property can be used to configure italic text?

Julian walks a total of 900 meters to work each day. How far does he walk in 10 days