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
grin007 [14]
3 years ago
5

The table below shows four systems of equations:

Mathematics
1 answer:
fredd [130]3 years ago
5 0
<span>System 1 and system 2, because the second equation in system 2 is obtained by adding the first equation in system 1 to two times the second equation in system 1

This is the correct answer because not only is it true but it also follows the property of solving systems of equations with adding the equations. To prove that it is true:

2nd equation in system #2 = 1st equation in system #1 + 2(2nd equation in system #1)

 </span>10x − 7y = 18 == 4x − 5y = 2 + 2(<span>3x − y = 8)
10x - 7y = 18 == 4x - 5y = 2 + 6x - 2y = 16
10x = 7y = 18 == 10x - 7y = 18</span>
You might be interested in
Please help me!!!!!!!
Dmitrij [34]

9514 1404 393

Answer:

  A)  (-6, 8)

  B)  (x, y) ⇒ (-x, y)

Step-by-step explanation:

B) The rule for reflection across the y-axis is that the x-coordinate changes sign:

  (x, y) ⇒ (-x, y)

__

A) To find the pre-image point, one can simply reflect the image back across the y-axis:

  A'(6, 8) ⇒ A(-6, 8)

7 0
2 years ago
PLEASE HELP ILL GIVE YOU BRAINLIEST!!! Which number line represents the number 0.7?
Novay_Z [31]

Answer:

C

Step-by-step explanation:

We know 0.7 is in between 0 and 1

Thus the dot has to be in between 0 and 1

And it should be 7^t^h unit after 0

Observing all the number line , we see C is the absolute match!

8 0
3 years ago
Write an equation in slope-intercept form of the line.
timurjin [86]

Answer:

y = -1/2x + 4

Step-by-step explanation:

You can see that the slope is -1/2 because of the rise over run.

It also crosses the y axis at 4,

so it is y = -1/2x + 4

4 0
2 years ago
3(1−9a)+22a=2(2a−9)−15<br> i need a step by step explanation please
SpyIntel [72]

Answer:a=4

Step-by-step explanation:

Expand the brackets. Collect like terms. Get the same values on each side so it’s easier to isolate a. Divide 9 from 9a so that u get a by itself and this gives u the answer if 36/9 or 4.

5 0
3 years ago
Read 2 more answers
Describe in a complete sentence the solution set for 3x + 3 = 3+ 3x.
sineoko [7]

Answer:

<em>It has infinitely as many solutions</em>

Step-by-step explanation:

Equations and Identities

When dealing with equations, we must find values of the variable who mak the expression become an identity.

The expression is an identity regardless on what the value of x is, so we can say the equation has infinite as many solutions. For example x=0 will make the expression look like 3=3 which is an identity. If x=8, we'll obtain 27=27 and so on

5 0
3 years ago
Other questions:
  • 200m-100m+48,750=51,000-150m
    9·1 answer
  • Find the vertex form of the following quadratic function. f(x)= x^2-11x+9
    9·1 answer
  • FOURTH TIME POSTING! EXTRA POINTS! <br> Complete each function. ( y = -x )
    13·2 answers
  • Round 845,001 to the nearest thousand
    5·2 answers
  • <img src="https://tex.z-dn.net/?f=4.5%20%5Cdiv%203%203%20%5Cdiv%204" id="TexFormula1" title="4.5 \div 3 3 \div 4" alt="4.5 \div
    10·2 answers
  • Rational expressions always contain logarithms. 1) Always true 2) Never true 3) Sometimes true
    6·1 answer
  • Factor the quadratic expression completely.
    11·1 answer
  • What are the solutions to the expression x^2-8x=24
    14·1 answer
  • What is the variable and inequality to this question
    12·1 answer
  • The bank manager wants to show that the new system reduces typical customer waiting times to less than 6 minutes. One way to do
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!