You visited us 1 times! Enjoying our articles? Unlock Full Access!

Bayes' Theorem

If x + y = ...

Question

If $x + y = 6$ and $3 x - y = 4$ , then $x - y$ is equal to:

- 1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

0

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $- 1$
Given, $x + y = 6$ ........(i)
and $3 x - y = 4$ ........(ii)
On adding, we get
$4 x = 10$ $\Rightarrow x = \frac{10}{4} = \frac{5}{2}$
Thus from (ii), $y = \frac{15}{2} - 4 = \frac{7}{2}$
Hence, $x - y = \frac{5}{2} - \frac{7}{2} = - 1$

Suggest Corrections

Similar questions

(1, - 2)

x^{2} + y^{2} = 1

(3, 2)

If the two pair of lines $2 x^{2} + 6 x y + y^{2} = 0$ and $4 x^{2} + 18 x y + b y^{2} = 0$ are equally inclined, then $b$ is equal to

x^{2} + y^{2} + 4 x - 6 y + 9 = 0

x^{2} + y^{2} - 4 x + 6 y + 4 = 0

a x + b y + c = 0

a + b + c

z = x + i y, x, y \in R

I m (\frac{2 z + 1}{i ¯ ¯ ¯ z + 1}) = - 2

y = (1 + x) (1 + x^{2}) (1 + x^{4}) \dots (1 + x^{2^{n}}),

y^{'} (0)

Join BYJU'S Learning Program