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
yKpoI14uk [10]
3 years ago
9

Which constants could each equation be multiplied by to eliminate the x-variable using addition in this system of equations? 2 x

+ 3 y = 25. Negative 3 x + 4 y = 22. The first equation can be multiplied by –3 and the second equation by 2. The first equation can be multiplied by –4 and the second equation by 2. The first equation can be multiplied by 3 and the second equation by 2. The first equation can be multiplied by 4 and the second equation by –3.
Mathematics
1 answer:
balu736 [363]3 years ago
8 0

Answer:

The first equation can be multiplied by 3 and the second equation by 2.

Step-by-step explanation:

We are given the following system of equations:

\boxed{\left \{ {{2x+3y=25} \atop {-3x+4y=22}} \right.}

To eliminate a variable in the equation, they must cancel out. <em>For instance, if x = 1, in order to cancel out the numbers, you must add -1.</em>

To multiply an equation, you must apply the constant that you are multiplying by to all constants and coefficients of the equation.<em> For example, to multiply 2x + 4y = 8 by 3, you must multiply 2x by 3, 4y by 3, and 8 by 3.</em>

<em />

Therefore, using this information, you can attempt each answer set and test the possibilities.

<u>Answer Choice A</u>

If you multiply the first equation by -3, you will get -6x - 9y = -75. If you multiply the second equation by 2, you will get -6x + 8y = 44. Adding -6 + -6 gives you -12, so these do not cancel out.

<u>Answer Choice B</u>

If you multiply the first equation by -4, you will get -8x - 12y = -100. If you multiply the second equation by 2, you will get -6x + 8y = 44. Adding -8 + -6 gives you -14, so these do not cancel out.

<u>Answer Choice C</u>

If you multiply the first equation by 3, you will get 6x + 9y = 75. If you multiply the second equation by 2, you will get -6x + 8y = 44. Adding 6 + -6 gives you 0, so these do cancel out.

<u>Answer Choice D</u>

If you multiply the first equation by 4, you will get 8x + 12y = 100. If you multiply the second equation by -3, you will get 9x - 12y = -66. Adding 8 + -9 gives you -1, so these do not cancel out.

You might be interested in
Which of the values from the set (-7, -6, -2, 0, 1, 3) satisfy the inequality-5x + 5&lt; 25
Troyanec [42]

Answer: -2, 0, 1, 3

Step-by-step explanation:

when you multiply -7 and -6 by -5 than add 5 you get a higher number than 25.

when you multiply -2, 0, 1 And 3 by -5 than add 5 you get a lower number than 25.

4 0
3 years ago
The surface area of a rectangular prism is 32 square inches. The volume of the prism is 12 cubic inches. The sum of all edge len
Goryan [66]

Answer:

36 cubic inches.

Step-by-step explanation:

Let the length, width and height of the rectangular prism are a, b, c respectively.

So, surface area, 2(ab + bc + ca) = 32 {Given} ............ (1)

Volume, abc = 12 {Given} ............ (2)

And, the sum of all the edges, 4(a + b + c) = 28 {Given} .......... (3)

Now, if the length width and height are increased by 1 inch, then the volume of the prism will be = (a + 1)(b + 1)(c + 1)

= abc + (ab + bc + ca) + (a + b + c) + 1

= 12 + 16 + 7 + 1 {From equations (1), (2) and (3)}

= 36 cubic inches. (Answer)

3 0
3 years ago
As used in line 53, "dominion" most nearly means
drek231 [11]

Choice B - Supremacy

As used in line 53, "dominion" most nearly means supremacy.

In the first paragraph of Passage 2, when discussing changing social relations, Mill writes that in her time there was "a just equality, instead of the supremacy of the strongest." In this context of a society where some once had much more power than others, the word "dominion" almost means superiority or greater power.

Choices A, C, and D are incorrect because, in the context of a paragraph discussing differences in the amount of power members of a society have, "dominion" means dominion or greater power, not omnipotence or the state of being all-powerful (choice A), possession ( choice C) or territory (choice D).

For more information about dominion, visit

brainly.com/question/11588378

#SPJ4

6 0
1 year ago
What is the simplest form of this expression?
Dimas [21]

Answer:

(4-m-1)-5

Remove the bracket

= 4-m-1-5

= -2-m

Hope this helps.

7 0
3 years ago
If (5⁴)m = 5 ¹²,what is the value of m<br> 2<br><br> 3<br><br> 5<br><br> 8
Lapatulllka [165]
The correct answer is:  [B]:  " 3 " .
_______________________________________________
Note:  
_______________________________________________
The question asks:
_______________________________________________
If (5⁴)ᵐ  = 5¹² ;  then what is "m" ?

Note the following property of exponents:
________________________________________________
   (xᵃ)ᵇ = x⁽ᵃ*ᵇ⁾ ; a≠0 ; b ≠ 0 ;  

Then,  (5⁴)³ = 5⁽⁴ * ³⁾ = 5¹² .

So, "12 ÷ 4 = 3" .
________________________________________________
The answer is:  "m = 3" ; which is:  Answer choice:  [B] .
________________________________________________
5 0
3 years ago
Other questions:
  • What is the value of x? 6 8 10 12
    9·2 answers
  • You invest an initial $1,000 in an account that has an annual interest rate of 2%, compounded quarterly. How much money will you
    6·1 answer
  • 3^(3)•4-(48-3)/5^(2)-18
    8·1 answer
  • Cynthia invests some money into a bank which pays 5% compound interest per year she wants it to be worth over £8000 at the end o
    9·1 answer
  • If two lines are perpendicular to each other, do they lie in the same plane?
    5·1 answer
  • Helppppp pleaseeeeee
    15·1 answer
  • Solve for X y and z brainliest Round to nearest tenth
    15·1 answer
  • What is a 1/15 cup in cooking??
    7·1 answer
  • Given g(x) = 3x + 14 , find x if g(x) = 20
    7·1 answer
  • Keisha and Jen went out to eat for dinner their meal together were $45.76 they want to leave a 20% tip how much total
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!