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
const2013 [10]
2 years ago
10

Solve the simultaneous equations​

Mathematics
1 answer:
nexus9112 [7]2 years ago
6 0

Answer:

Step-by-step explanation:

2x + 3y = 2

x = 2 - 3y /2

x + y = 0

substitute the value of x

\frac{2 \\- 3y}{2} + y = 0

2 - 3y + 2y = 0

2 = y

again,substitute the value of y

x = 2 - 3y / 2

=2 - 3*2 / 2

=2 - 6 / 2

=-2

You might be interested in
Two sides of a triangle
True [87]

step 1: open brackets n rmb to flip the signs

step 2 (optional): rearrange to make the equation clearer to add/minus

length of 3rd side:

(8x + 3) - (2x + 1) -(5x + 2)

= 8x + 3 - 2x -1 - 5x -2

= 8x -2x -5x +3 -1 -2

= x

Therefore, length of 3rd side is X cm.

---

If perimeter = 75cm,

8x +3 = 75

8x = 75-3

8x = 72

x = 9 cm

Therefore,

1st side = 2(9) +1

= 19 cm

2nd side = 5(9) +2

= 47 cm

3rd side = 9 cm

4 0
3 years ago
Rectangle EFGH is rotated 90° clockwise around the origin. What are the coordinates of the image point F?
denpristay [2]

Answer:

3 -5 on edg

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve the following system of equations using the elimination method. 5x + y = 9 –10x + 7y = 18 Question 6 options: A) (2,–6) B)
Leya [2.2K]

Answer:

Step-by-step explanation:

5x + y = 9

-10x + 7y = 18

10x + 2y = 18

-10x + 7y = 18

9y = 36

y = 4

5x + 4 = 9

5x = 5

x = 1

(1,4)

answer is D

4 0
2 years ago
My car travels an average 12.3 km on each litre of petrol. What distance willI travel on 105 litres? *
Jobisdone [24]

Answer:

1291.5km

Step-by-step explanation:

12.3*105=1291.5km

3 0
2 years ago
The point (1,−1) satisfies the inequality 40x−22y≤50.
Natalka [10]

Không thảo mãn vì

44.1-22.(-1)=66

7 0
3 years ago
Other questions:
  • 4321 divided by 56 showing work
    10·1 answer
  • What math problems Lisa?
    8·2 answers
  • The volume of a rectangular prism is 72 cubic centimeters. the prism is 2 centimeters wide and 4 centimeters high
    5·2 answers
  • Help me please i dont understand????
    8·2 answers
  • How would you explain this ?
    8·1 answer
  • Which of the following theorems verifies that WVU= RST
    11·1 answer
  • lf (x + k) is a factor of f(x), which of the following must be true? F(k)=0 f(-k)=0 a root of f(k) is x=k a y intercept of f(k)
    7·2 answers
  • The bottom of a cylinder has a circumference of about 60 in. What is the approximate diameter of the cylinder? Round to the near
    6·1 answer
  • Simplify these expresions pls<br><br>1. 2(3+d-1) <br>2. 5(k+4)-2k​
    14·1 answer
  • The ratio of angles in a triangle is 11:6:7. find the largest angle
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!