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
SVETLANKA909090 [29]
3 years ago
8

Solve the simultaneous equations5x + y = 113x - y = 9​

Mathematics
2 answers:
bagirrra123 [75]3 years ago
8 0

Answer:

Step-by-step explanation:

5x  + y = 11 -------------------(I)

3x - y = 9 -----------------(II)

Add equation (I) & (II)

   5x + y = 11

   <u>3x - y = 9</u>        {add and y will be eliminated and we'll get the value of x}

  8x       = 20

          x = 20/8

         x = 2.5

Plugin x = 2.5 in equation (I)

5*2.5 + y = 11

 12.5  + y = 11

            y = 11 - 12.5

            y = -1.5

Andreyy893 years ago
3 0

Answer:

1) x = 2.5

2) y = -1.5

Step-by-step explanation:

You might be interested in
Please help solve the for x. <br> I'm offering 20 points
andrew11 [14]

Answer:

1/-21

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

17

4

x+

−1

12

=6x

Step 2: Subtract 6x from both sides.

17

4

x+

−1

12

−6x=6x−6x

−7

4

x+

−1

12

=0

Step 3: Add 1/12 to both sides.

−7

4

x+

−1

12

+

1

12

=0+

1

12

−7

4

x=

1

12

Step 4: Multiply both sides by 4/(-7).

(

4

−7

)*(

−7

4

x)=(

4

−7

)*(

1

12

)

x=

−1

21

3 0
4 years ago
Consider the figure. What is the area of the figure, in square centimeters? ​
Serhud [2]

Answer: The

Step-by-step explanation: First we look at our right angles of the shape, Next you analyze your formula and use it to form your answer(formula: Base X Height).Then for the final step you would multiply 9x5=45.We wouldn't be doing all of them because that would be doing Total Area.

4 0
3 years ago
Read 2 more answers
A box contains 300 raffle tickets. Only 15 tickets are winning tickets. What is the
Roman55 [17]

Answer:

5%

Step-by-step explanation:

15/300 = 0.05

5%

3 0
3 years ago
Help plz I really need some help right now
Montano1993 [528]
1/2 chance of getting an even number and 1/2 chance of getting an odd one.
8 0
3 years ago
Read 2 more answers
If g(x)=70−3x, find -g(-x)
Vedmedyk [2.9K]

Answer:

- g(- x) = - 70 - 3x

Step-by-step explanation:

to evaluate g(- x) substitute x = - x into g(x)

g(- x) = 70 - 3(- x) = 70 + 3x, hence

- g(- x) = - (70 + 3x) = - 70 - 3x


6 0
3 years ago
Other questions:
  • Mason drew a quadrilateral with one pair of opposite sides that are parallel which quadrilateral did mason draw?
    13·2 answers
  • Look at the attachment
    13·1 answer
  • What is the factor tree for 68
    7·1 answer
  • Simplify completely: the quantity 8 times x to the third power plus 6 times x to the 2nd power minus 4 times x all over negative
    12·1 answer
  • At noon on a winter day , the temperature was -5 C. By dusk , the temperature fell 10 degrees.
    11·1 answer
  • 4) *
    11·2 answers
  • How many solutions does this equation have?<br> 3(x+2) - 10 = 4x - 6 + x
    8·2 answers
  • Giving brainliest to correct answers!
    8·1 answer
  • Dinkle Company purchased equipment for $50,000. The equipment has an estimated residual value of $5,000 and an expected useful l
    8·1 answer
  • The length of Amy's rectangular kitchen is 12 feet. If the area of the room is at least 96 square feet, what is the smallest wid
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!