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
Nitella [24]
3 years ago
9

If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x'

s add out of this system? -2x + 3y = 6 4x - 2y = 8
Mathematics
1 answer:
Inessa05 [86]3 years ago
7 0
2 times 2=4
multiply first equation by 2 to get
-4x+6y=12
then add to get

-4x+6y=12
<u>4x-2y=8 +</u>
0x+4y=20

4y=20
y=5

sub back
-2x+3y=6
-2x+3(5)=6
-2x+15=6
-2x=-9
x=9/2=4.5


the number to multiply by is 2
You might be interested in
14.) Write an equation of a line with the given slope and y-intercept.
melomori [17]

Answer:

y= x +4

Step-by-step explanation:

m = slope and b= y-intercept.

4 0
3 years ago
Find the 9th term of the sequence which has a first term of 1 and has a common ratio of 1.5
Scrat [10]
A₁ = 1;  r=1.5

a₉ = a₁ * r⁸ = 1 * 1.5⁸ ≈ 25.63

Answer: c. 25.63
7 0
3 years ago
Find the product of 5 1/2 and 1/8
Svetach [21]
To answer, make 5 1/2 an improper fraction and multiply straight across from there.

11/2 * 1/8 = 11/16 and that is in its simplest form.
4 0
4 years ago
Read 2 more answers
3. Solve each equation, and check your solution.
Alisiya [41]

1) 2m - 16 = 2m + 4

2m - 2m = 4 + 16

0 = 20 (no solution)

2) -4(r + 2) = 4(2 - 2r)

-(r + 2) = 2 - 2r

-r - 2 = 2 - 2r

-r + 2r = 2 + 2

r = 4

3) 12(5 + 2y) = 4y - (6 - 9y)

60 + 24y = 4y - 6 + 9y

60 + 24y = 13y - 6

24y - 13y = -6 - 60

11y = -66

y = -6

7 0
3 years ago
Solve the inequality<br><br> n-9 &lt; 4
icang [17]

Answer:

<u><em>n=36</em></u>

<u><em></em></u>

Step-by-step explanation:

n/9=4

We simplify the equation to the form, which is simple to understand  

n/9=4

Simplifying:

+ 0.111111111111n=4

We move all terms containing n to the left and all other terms to the right.  

+ 0.111111111111n=+4

We simplify left and right side of the equation.  

+ 0.111111111111n=+4

We divide both sides of the equation by 0.111111111111 to get n.  

n=36

7 0
3 years ago
Other questions:
  • C: y=2x+7 D: y= 1/2x+7
    6·1 answer
  • Just Number 15? Please
    6·1 answer
  • Write an equation for the translation of y = |x|. 10.5 units left
    14·2 answers
  • Please help!!!!! For the data set shown by the table
    6·1 answer
  • 7 × 10^7 in standard form
    7·1 answer
  • Mirela has a rectangular piece of paper with an area of 0.42 m2. She cuts the paper into small rectangles with areas of 600 cm2.
    9·1 answer
  • A swimming pool containing 2000l of water is 1/16 full. How many litres of water is required to make the pool half full
    14·1 answer
  • In the diagram below, ZGRS - ZART, GR = 36, SR = 45, AR = 15, and RT = 18. G 36 А 15 R S T 45 18 Which triangle similarity state
    5·1 answer
  • Go follow its datgurlmaribel
    11·1 answer
  • P and q are two arithmetic sequences. The first four terms of sequence P are 2,6,10,14. The nth term of sequence Q is 145-3n. Th
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!