Solve the equation; 3x - 2y = 7, x + 2y = -3
...Solve the equation; 3x - 2y = 7, x + 2y = -3
x = 1, y = -2
x = 1, y = 3
x = -2, y = -1
x = 4, y = -3
Correct answer is A
3x - 2y = 7; Solve by elimination method
x + 2y = -3
3x - 2y = 7.....(i)
-3x + 6y = -9.....(ii)
-8y = 16
y = \(\frac{16}{-8} = -2\)
Put y = -2 into equation (i); 3x - 2y = 7
3x - 2(-2) = 7
3x + 4 = 7
3x = 7 - 4
3x = 3
x = \(\frac{3}{3}\) = 1
Find the standard deviation of the numbers 6, 9, 10, 8 and 7 ...
Use the graph of sin (θ) above to estimate the value of θ when sin (θ) = -0.6 for ...
Find the sum of the first 18 terms of the series 3, 6, 9,..., 36. ...
If \(-2x^3 + 6x^2 + 17x\) - 21 is divided by \((x + 1)\), then the remainder is...
\((\sqrt[4]{3} + \sqrt[4]{2})(\sqrt[4]{3} - \sqrt[4]{2})(\sqrt{3} + \sqrt{2})\) is equal to...
Factorize 9(x + y)2 - 4(x - y)2...
If \(1P03{_4} = 115_{10}\) find P...
If (K2)\(_6\) * 3\(_6\) = 3\(_5\)(K4)\(_5\), what is the value of k?...