ambmundle ambmundle

01-03-2017
Mathematics

contestada

how to use substitution for 4x+3y=13 and x+y=4

Respuesta :

wolf1728 wolf1728

04-03-2017

A) 4x + 3y = 13
B) x + y = 4
B) x = 4 -y Then we substitute this into Equation A

A) 4 (4-y) + 3y = 13
A) 16 -4y +3y = 13
A) -y = -3
y = 3
x = 1

Answer Link

Otras preguntas

What is the surface area of the box?

Find the equation of the line that is perpendicular to 4 x + 3 y = 5 and goes through the point (3, –3)

Modify adenosine triphosphate (atp) to give the remaining product of atp hydrolysis

What is the area of this quadrilateral

The Contemporary Music is music of the 20th century. true/false

Who is considered the founder of the french rococo style of painting? a. jean-antoine watteau b. jean-honore fragonard c. johann balthasar neumann d. jean-luc k

Which two groups of vertebrates are warm-blooded?

Find the x- and y-intercepts of the quadratic function below. Give non-integer coordinates in fractional form. f(x) = 2x2 - 5x + 3 -

Workers in an office of 60 staff were asked their favourite type of take-away. The results are summarised in the table. Pizza=8 Curry=8 Fish & chips=5 Kebab

Suppose a researcher wanted to extract as much zinc ion as possible from solution a without any copper (ii) impurity. How many milliliters of solution b should