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irinina [24]
2 years ago
10

Solve the following simultaneous equations. x + y = 3 x -y = 1

Mathematics
2 answers:
Natali [406]2 years ago
8 0
Answer: x = 2, y = 1

Step-by-Step Solution:

=> x + y = 3 (Eq. 1)
=> x - y = 1 (Eq. 2)

Adding Eq. 1 and Eq. 2, we get :-

2x = 3 + 1
2x = 4
x = 4/2
=> x = 2

Therefore, x = 2

Substitute value of ‘x’ in Eq. 1 :-

x + y = 3
(2) + y = 3
2 + y = 3
y = 3 - 2
=> y = 1

Therefore, y = 1

Hence, x = 2 and y = 1.
monitta2 years ago
4 0

Answer:

<u>x = 2, y = 1 or (2, 1)</u>

Step-by-step explanation:

<u>Solving by elimination method</u> :

  • x + y + (x - y) = 3 + 1
  • 2x = 4
  • x = 2

  • 2 - y = 1
  • y = 1

The solution is : x = 2, y = 1 or (2, 1)

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Anika [276]
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a) c - 3 = 8 - 3
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b) 15 - c = 15 - 8
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c) 3(c + d) = 3(8 + (-5))
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d) 2c - 4d = 2(8) - 4(-5)
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e) d - c^2 = -5 - (8)^2
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3 years ago
An international company has 29,100 employees in one country. If this represents 23.7% of the company's employees, how many empl
WINSTONCH [101]

Answer:

122785 employees.

Step-by-step explanation:

Let the total number of employees be X

Given the following data;

Number of employees = 29100

Percentage = 23.7%

To find the total number of employees;

23.7/100 * X = 29100

Cross-multiplying, we have;

23.7X = 29100 * 100

23.7X = 2910000

X = 2910000/23.7

X = 122784.81 ≈ 122785 employees

6 0
2 years ago
Jayden measured a community college and made a scale drawing. He used the scale 22 millimeters : 9 meters. The actual length of
juin [17]

Hey there! :)

Answer:

x = 242 mm.

Step-by-step explanation:

Begin by setting up a proportion between the actual college building and the drawing.

\frac{22mm}{9m} = \frac{x}{99m}

Cross multiply:

99 × 22 = 9 × x

2178 = 9x

Divide both sides by 9:

2178/9 = 9x/9

x = 242 mm.

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3 years ago
PLEASE HELP ME WITH THIS QUESTION!
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