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
alexdok [17]
3 years ago
8

Consider the system of linear equations. 5x+10y=15 10x+3y=13 To use the linear combination method and addition to eliminate the

x-terms, by which number should the first equation be multiplied?
A- -2
B- -1/2
C- 1/2
D- 2
Mathematics
2 answers:
antiseptic1488 [7]3 years ago
6 0

Answer:

  A:  -2

Step-by-step explanation:

You want some factor k such that k(5x) +(10x) = 0. That is, 5k+10 = 0. The solution to this is k=-2, corresponding to selection A.

vesna_86 [32]3 years ago
4 0

k = -2 for sure

I normally multiply 5x+10y=15 by -2 to cancel out the x's.

This is because you can only solve the problem if one of your variables is canceled out and then you solve!

You might be interested in
A keyboard typically has 46 keys that can be modified and four ways to modify them, SHIFT, CTRL, ALT, and no modification. For i
Oksana_A [137]
I am thinking its 414 not 100%  tho

7 0
4 years ago
What is the value of this expression <img src="https://tex.z-dn.net/?f=%20-8%5E%7B3" id="TexFormula1" title=" -8^{3" alt=" -8^{3
BARSIC [14]
-8^3 = (-8)(-8)(-8) = -512
6 0
3 years ago
Read 2 more answers
Plz help plz plz help helpe ​
jeka57 [31]

Answer:

-2 1/5, -1 2/5, 1/5, |-3/5|, |-1 1/5| ,|-2 2/5|

Step-by-step explanation:

Absolute value means take the positive value

-2 1/5

|-1 1/5| = 1 1/5

|-2 2/5| = 2 2/5

1/5

|-3/5| = 3/5

-1 2/5

We want the numbers from smallest to largest

The most negative is

-2 1/5, -1 2/5

Then to the fractions

1/5, |-3/5|

Then the positive numbers

|-1 1/5| ,|-2 2/5|

3 0
3 years ago
Line / is a straight line.
sergejj [24]

Answer:

the first and last one

Step-by-step explanation:

6 0
2 years ago
Draw a model of square root of 12 using perfect squares
Shkiper50 [21]

Answer:

The answer is "\sqrt{12} is not a perfect square".

Step-by-step explanation:

12 is not a perfect square because it is the natural number, and no other natural number would square the number 12, that's why it is not a perfect square.

If we calculate the square root of \sqrt{12}. so, it is will give 2\sqrt{3} that is not a perfect square root which can be described as follows:

\Rightarrow \sqrt{12}= \sqrt{2\times 2\times 3}

            = \sqrt{2^2\times 3}\\\\= 2\sqrt{3}\\\\

\bold{\sqrt{12}} is not a perfect square root.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Answer to this question
    5·2 answers
  • 5p + 12 = 2<br><br>Answer and send steps​
    13·1 answer
  • Ivan sold 31 boxes of oranges on Friday and 29 boxes on Saturday during a citrus sale. There were 10 oranges in each box. How ma
    8·1 answer
  • I need to know an answer to an equation<br> 2 2/5w = 21 3/5
    6·1 answer
  • Question:
    5·1 answer
  • Please find the greatest common factor there is a picture
    7·1 answer
  • What had the biggest effect on the earths orbit about the sun , explain.
    15·1 answer
  • Pls help i wiill give points
    6·1 answer
  • 1. Calculate the slope of the line that passes through the points (-2, 6) and (5, 14).
    10·1 answer
  • Two sides of a parallelogram are 5.8m and 8.2m long. Find the perimeter​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!