1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
garri49 [273]
3 years ago
5

How to do substitution

Mathematics
1 answer:
Brut [27]3 years ago
5 0
You solve for one variable like 
y-5x=2
"y=5x+2"

9x+3y=58
and you plug it in into the other equation
9x+3(5x+2)=58

You solve for x and then plug in your answer for x into the other equation
*let's imagine x=8*
then:
y-5(8)=2
and solve for y 
:D 


You might be interested in
Find the length of the diagonal AD in the pentagon ABCDE shown in the coordinate plane.
Xelga [282]

Answer:

\sqrt{73} units.

Therefore, Option C is correct.

Step-by-step explanation:

We have given a pentagon ABCDE

We need to calculate its length

That means we have to find the distance of AD

So, coordinates of A(1,6) and D(4,-2)

Using distance formula:

\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Here,x_1=1,y_1=6,x_2=4,y_2=-2

On substituting the values we will get:

\sqrt{(4-1)^2+(-2-6)^2}

On simplification:

\sqrt{3^2+(-8)^2}

\sqrt{9+64}

\sqrt{73}.

Hence, the length of AD is  \sqrt{73} units.

Therefore, Option C is correct.

6 0
3 years ago
define a variable write an equation and solve the problem. the length of a rectangle is twice the width. an equation that models
liberstina [14]
6w=36
w=6

width=6 
length=12
7 0
3 years ago
How many times can 14 go into 8574?
bearhunter [10]
612.4285714285714 is the answer
8 0
2 years ago
Write the equation of a line in the given form.
Gnom [1K]

Answer:

y = \frac{1}{4}x - 5

Step-by-step explanation:

Slope intercept form: y = mx + b

Find slope:

m = (y₂ - y₁) / (x₂ - x₁)

   = (-5 - (-4)) / (0 - 4)

   = -1 / -4

   = 1/4

Find y intercept using anyone of the given points and slope from above:

y = mx + b

-5 = \frac{1}{4}(0) + b

b = -5

Now use the above slope and y intercept to create equation of a line:

y = \frac{1}{4}x - 5

3 0
2 years ago
What is the slope of the line through the points (4,2) and (-16,-6)
Maslowich

Answer:

2 / 5.

Step-by-step explanation:

The slope is the rise over the run.

In this case, the rise is 2 - (-6) = 2 + 6 = 8.

The run is 4 - (-16) = 4 + 16 = 20.

So, the slope is 8 / 20 = 4 / 10 = 2 / 5.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Other questions:
  • 2 years ago my mother was 4 times my age then. In 18 years I will be half my mothers new age. How old am I now?
    13·1 answer
  • A parabola with vertex (h, k) and a vertical axis of symmetry is modeled by the equation y - k = a(x - h)2. Determine the vertex
    12·1 answer
  • Write 0.4% as a fraction explain
    15·2 answers
  • Hey guys please help find the area
    11·1 answer
  • Please answer this in two minutes
    8·1 answer
  • An electronic system has three major circuit boards, A, B and C. These boards have respective software support in the ratio, (30
    6·1 answer
  • Does anyone know how to do this ? please help i don’t know how to . all three if you can :(
    8·1 answer
  • Can someone help me with those three and explain how u got it
    5·1 answer
  • If Mrs. Kliesch’s Thrive class has 9 students and 6 of the students are girls, what percent of her class is girls?
    15·1 answer
  • PLLLZZZZ HEEELLLPPPP!!!!!!!!!!! Questions are below! :D
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!