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
erastova [34]
3 years ago
11

-7x +14y = -14 -3x +7y = -3

Mathematics
1 answer:
zzz [600]3 years ago
5 0

Answer:

[8, 3]

Step-by-step explanation:

-3⁄7[-7x + 14y = -14] ↷

{3x - 6y = 6

{-3x + 7y = -3

_____________

y = 3 [Plug this back into both equations to get an x-value of 8]; 8 = x

So, using the Elimination Method, I decided to eliminate the <em>x</em>'s by multiplying the top equation by -3⁄7 to end up with 3x, so I can cancel that with -3x in the bottom equation [<em>additive inverses</em> ALWAYS result in zero], and to be genuine, it really does not matter which variable you choose to eliminate.

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

**I have a video that explains how to solve a system of equations in two to three variables. It is titled "Solving Systems of Equations". I encourage you to watch the video and gain alot more knowledge from it, so you can better understand the concept.

You might be interested in
Which expression gives the distance between the points (2,4) and (-4,8)?
cluponka [151]
(y2-y1)/(x2-x1)=(8-4)/(-4-2)
4 0
3 years ago
Read 2 more answers
Which equation represents the circle shown on the graph below.
SVEN [57.7K]

Answer:

C

Step-by-step explanation:

Edge2021

4 0
2 years ago
What is the surface area of the box if it is scaled up by the factor of 10 and the surface area is 16in
algol [13]
If each linear dimension is scaled by a factor of 10, then the area is scaled by a factor of 100. This is because 10^2 = 10*10 = 100. Consider a 3x3 square with area of 9. If we scaled the square by a linear factor of 10 then it's now a 30x30 square with area 900. The ratio of those two areas is 900/9 = 100. This example shows how the area is 100 times larger.

Going back to the problem at hand, we have the initial surface area of 16 square inches. The box is scaled up so that each dimension is 10 times larger, so the new surface area is 100 times what it used to be

New surface area = 100*(old surface area)
new surface area = 100*16
new surface area = 1600

Final Answer: 1600 square inches

3 0
3 years ago
If m∠3 = 110°, find m∠2: <br><br> A. 70°<br> B. 90°<br> C. 110°<br> D. 120°
stiv31 [10]
A. 70°

Supplementary angles always = 180°

Where 180 - 110 = 70

110+ 70 = 180
7 0
2 years ago
Read 2 more answers
HELP I HAVE TO FINISH THIS FAST
Usimov [2.4K]

Answer:

13 minus 3x cubed

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • 340m/seg que tiempo en escuchar el estampido de un cañón que encuentra 15km dedistancia
    7·1 answer
  • Factor completely. 25w² + 60w + 36 Express the answer in the form (aw+b)2 . Enter your answer in the box.
    7·2 answers
  • 15 cars. enter the mall every 5 minutes. how many cars enter in 2 minutes
    15·2 answers
  • A baseball tournament starts out with 128 teams. After each round, half of the teams are eliminated. After 5 rounds, how many
    12·1 answer
  • What is the vertex of the quadratic equation y = - 1/3 (x + 2)^2 +5
    15·1 answer
  • Can some one please help me with this? I will mark brainlist if right.
    10·1 answer
  • Linear Law Additional Mathematics F4​
    15·1 answer
  • Guys pls help me!!!!!
    8·1 answer
  • What is 3 1/3 as a percentage and a decimal? Thank you!!
    13·1 answer
  • What is -2 (7-4)+4=-4
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!