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
jek_recluse [69]
3 years ago
5

Solve the equation below using elimination*

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
4 0

Answer:

x=2

y=−1

Step-by-step explanation:

You can multiply the second equation by 3:

{2x-3y=7

{9x+3y=15 add the two together (in columns):

11x+0=22

so that x=22/11=2

substitute this back into the first equation:

2*2-3y=7

y=-1

You might be interested in
Solve for all values of x by factoring.<br> x^2 + 4x – 30 = -3x
vichka [17]

Answer:

{x}^{2}  + 4x - 30 =  - 3x \\{x}^{2}  + 7x - 30 = 0 \\  {x}^{2}  - 3x + 10x - 30 = 0 \\ x(x - 3) + 10(x - 3) = 0 \\ (x - 3)(x + 10) = 0 \\  \boxed{x = 3} \\  \boxed{x =  - 10}

<h3><em><u>x=3 or x=-10</u></em> is the right answer.</h3>

7 0
3 years ago
Simplify each expression 1/3^-3
xxTIMURxx [149]

Answer:

27

Step-by-step explanation:

Use exponent laws

1/3^-3 = 3^3 = 27

3 0
3 years ago
Read 2 more answers
Please help me with this math
Yakvenalex [24]

Answer:

i think is correct

Step-by-step explanation:

you need connect figure.

5 0
3 years ago
Read 2 more answers
3 x - 23 =
S_A_V [24]

Answer:

-69

3

-84

-9

-90

I hope it is helpful

8 0
2 years ago
Read 2 more answers
The Stem-and-Leaf plot shows the class average on the last math test. Select the true statement below.
Anestetic [448]
I think it's c. the mean was 89
6 0
3 years ago
Other questions:
  • Luke has a string that is 6 inches long and a string that is 11 inches long .How many inches of string does Luke have?Draw a dia
    9·1 answer
  • (90 POINTS FOR ANSWERING IF YOU DON'T ANSWER CORRECT I WILL REPORT THE ANSWER) One day, you are selected to be interviewed to wo
    10·2 answers
  • If a translation maps point (3, 2) to (4, 5), then what is the image of the point (O. O)?
    10·1 answer
  • Work out the value of 4^5
    8·2 answers
  • If M angle 4=25 degrees, then what is M angle 8? Please help me, I need this done today, and I have tried everything
    15·1 answer
  • Can someone please help me with this questions
    7·1 answer
  • Put these numbers in order from greatest to least.<br><br> 0.24,0.73,1/4, and 3/4
    12·2 answers
  • A problem states: "There are 5 more girls than boys at the party. There are 27 children at the party in all. How many boys are t
    9·1 answer
  • What is the slope of a line that goes through the points (3, 7) and (8, 11)
    12·2 answers
  • Which solution can be simplified to determine when the object will hit the ground? t = t = t = t =
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!