What are the values of x and y in the following pair of equations? x² y - 2y = 42 x + 2 = 5
- x = 2, y = 4
- x = 3, y = 6
- x = 5, y = 8
- None of these
Explanation
Given the pair of equations:
1. x²y - 2y = 42
2. x + 2 = 5
From equation (2), we get:
x = 5 - 2
x = 3
Now, substitute x = 3 into equation (1):
3²y - 2y = 42
9y - 2y = 42
7y = 42
y = 6
Related MCQs
- 25
- 30
- 35
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 10x = - 3
- 2x = - 27
- 2x = 27
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 1, 4, -21
- 1, 4, 21
- -1, 4, -21
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 2/x + 12/(x +5)
- 3/x + 22/(x +5)
- 4/x + 16/(x +5)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Leave a Reply
Your email address will not be published. Required fields are marked *
