Solve the following pair of linear equations by substitution method.
\( \mathrm{W} \)
(i) \( x-y...
Solve the following pair of linear equations by substitution method.
\( \mathrm{W} \)
(i) \( x-y=2,3 x+2 y=16 \)
(ii) \( 7 x-4 y=3, x+2 y=3 \)
(iii) \( 3 x+7 y=37,5 x+6 y=39 \)
(iv) \( \frac{3 x-4 y}{2}=10, \frac{3 x+2 y}{4}=2 \)
(v) \( y=\frac{2}{3} x+6,2 y-4 x=20 \)
(vi) \( 3 x-\frac{y+7}{11}=8,2 y+\frac{x+11}{7}=10 \)
(vii) \( 1.1 x+1.5 y+2.3=0,0.7 x-0.2 y=2 \)
(viii) \( 0.2 x+0.3 y=1.3,0.4 x+0.5 y=2.3 \)
(ix) \( \sqrt{7} x+\sqrt{11} y=0, \sqrt{3} x-\sqrt{5} y=0 \)
(x) \( 7(y+3)-2(x+2)=14,4(y-2)+3(x-3)=2 \)
š²PW App Link - https://bit.ly/YTAI_PWAP
šPW Website - https://www.pw.live
Other Videos By PW Solutions
| 2023-02-13 | The equations of perpendiculars of the sides \( \mathrm{AB} \& \mathrm{AC} \) of triangle \( \ma... |
| 2023-02-13 | A country has food deficit of \( 10 \% \). Its population grows continuously at a rate of \( 3 \... |
| 2023-02-13 | Find the sum of first 24 terms of the AP \( a_{1}, a_{2}, a_{3} \ldots \), if it is known that
(... |
| 2023-02-13 | The area (in sq units) of the smaller of the two circles that touch the parabola, \( y^{2}=4 x \... |
| 2023-02-13 | Check whether the following equations are quadratic or not.
\( \mathrm{P} \)
(i) \( x+\frac{3}{x... |
| 2023-02-13 | Write the discriminant of the following
(P)
(i) \( 3 x^{2}-4 x+7=0 \)
(ii) \( \sqrt{3} x^{2}-2 \... |
| 2023-02-13 | Let \( u(x) \) and \( v(x) \) satisfy the differential equations \( \frac{d u}{d x}+p(x) u=f(x) ... |
| 2023-02-13 | A person is to count 4500 currency notes. Let \( \mathrm{a}_{\mathrm{n}} \) denotes the number o... |
| 2023-02-13 | Solve the following pair of equations by using
W elimination method.
(i) \( 8 x+5 y=11, x+y=4 \)... |
| 2023-02-13 | True and False The sequence defined by \( a_{n}=2 n^{2}-3 \) is an W AP. |
| 2023-02-13 | Solve the following pair of linear equations by substitution method.
\( \mathrm{W} \)
(i) \( x-y... |
| 2023-02-13 | Match the Columns
Let \( E_{1}=\left\{x \in R: x \neq 1\right. \) a... |
| 2023-02-13 | In a high school, a committee has to be formed from a group of 6 boys \( M_{1}, M_{2}, M_{3}, M_... |
| 2023-02-13 | (a) Find the number of words each consisting of 3 consonants \& 3 vowels that can be formed from... |
| 2023-02-13 | Given A circle, \( 2 x^{2}+2 y^{2}=5 \) and a parabola, \( y^{2}=4 \sqrt{5} x \).
Statement I An... |
| 2023-02-13 | A man saves Rs. 200 in each of the first three months of his service. In each of the subsequent ... |
| 2023-02-13 | The ratio of the areas of the two triangles formed by the lines representing the equations \( 2 ... |
| 2023-02-13 | Determine a positive integer \( n \leq 5 \), such that \( \int_{0}^{1} e^{x}(x-1)^{n} d x=16-6 e... |
| 2023-02-13 | If \( f \) is a continuous function with \( \int_{0}^{x} f(t) d t \rightarrow \infty \) as \( ... |
| 2023-02-13 | A vessel contains a mixture of \( 24 \mathrm{~L} \) milk and \( 6 \mathrm{~L} \) water and secon... |
| 2023-02-13 | Match the following columns. \( \mathrm{W} \) t. \( -2 \) |
0