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
Greeley [361]
3 years ago
9

Solve the system by substitution. y = -3x + 4 y = -7x Submit Answer

Mathematics
1 answer:
iVinArrow [24]3 years ago
5 0

Answer:

{y,x} = {7,-1}

Step-by-step explanation:

(-7x) + 3x = 4

- 4x = 4

 4x = - 4

x = - 1

   y = -7x

   x = -1

   y = -7(-1) = 7

You might be interested in
Find x. Assume that segments that appear tangent are tangent.
kipiarov [429]
Assuming that CB is tangent, this is just a right triangle with a hypotenuse of 20 and a side of 12 so by the Pythagorean Theorem:

20^2=12^2+x^2

400=144+x^2

x^2=400-144

x^2=256

x=16
6 0
3 years ago
HELP PLEASE DUE IN 4 MINUTES
Angelina_Jolie [31]

Answer:

475

Step-by-step explanation:

If each represents 100

For carousel, there are 4 whole and a 3/4

Hence,

4(100)+3/4(100)

=475

3 0
3 years ago
One number is five less than a second number. Five times the first is 15 more than 6 times the second. Find the numbers
Shalnov [3]

Answer:

x = -45, y = -40

Step-by-step explanation:

Based on the first clue, we find out that

x + 5 = y

5x = 6y + 15

We can re-write the first equation to x = y - 5.

Therefore, the second equation can also be written as 5(y - 5) = 6y + 15

This can be simplified to 5y - 25 = 6y + 15

We can subtract 6y from each side, and add 25 to each side;

5y - 6y = 15 + 25

Therefore, -y = 40

Therefore y = -40.

Now let's plug this back into the original equation, to get : x  + 5 = -40

x=-45

4 0
3 years ago
HELP PLEASE!! &lt;3 <br> A rectangle has vertices (w,v), (w,z), and (z,z). Find the fourth vertex.
Vaselesa [24]

Answer:

Hey, Try practiceing on your own

Step-by-step explanation:

8 0
3 years ago
Write the quadratic equation that has roots -1-rt2/3 and -1+rt2/3 if its coefficient with x^2 is equal to 1
weeeeeb [17]

The equation of the quadratic function is f(x) = x²+ 2/3x - 1/9

<h3>How to determine the quadratic equation?</h3>

From the question, the given parameters are:

Roots = (-1 - √2)/3 and (-1 + √2)/3

The quadratic equation is then calculated as

f(x) = The products of (x - roots)

Substitute the known values in the above equation

So, we have the following equation

f(x) = (x - \frac{-1-\sqrt{2}}{3})(x - \frac{-1+\sqrt{2}}{3})

This gives

f(x) = (x + \frac{1+\sqrt{2}}{3})(x + \frac{1-\sqrt{2}}{3})

Evaluate the products

f(x) = (x^2 + \frac{1+\sqrt{2}}{3}x + \frac{1-\sqrt{2}}{3}x + (\frac{1-\sqrt{2}}{3})(\frac{1+\sqrt{2}}{3})

Evaluate the like terms

f(x) = x^2 + \frac{2}{3}x - \frac{1}{9}

So, we have

f(x) = x²+ 2/3x - 1/9

Read more about quadratic equations at

brainly.com/question/1214333

#SPJ1

7 0
1 year ago
Other questions:
  • Solve the linear inequality 1/4x−1/2≤−3/4
    11·2 answers
  • Select the pair of functions representing f(x) and g(x) if f(g(x)) =18x+1.
    13·1 answer
  • Which of the solution sets is all real numbers? |x| &lt; -1 |x| = -1 |x| &gt; -1?
    11·2 answers
  • In the figure, m and n are rays.
    11·1 answer
  • What is 3v+7v+9v equal to
    14·1 answer
  • Questions 1-4
    14·1 answer
  • select the correct button in the table to show whether each statement about the graph below is true or false ​
    9·1 answer
  • 18 landmarks in 12 3/4 days how many days to do 12 landmarks?
    7·1 answer
  • 10-x/4=1/2 find x<br> plz<br> help
    7·1 answer
  • A circular railroad-crossing sign has a diameter of 30 inches.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!