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 = 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 = 33 = 1
The nth term of a sequence is given by (-1)n−2 x 2n−1. Find the sum of the second and ...
Study the given histogram above and answer the question that follows. What is the total number of...
A regular polygon has 150º as the size of each interior angle. How many sides does it have...
Evaluate 0.8×0.43×0.0310.05×0.72×0.021. Correct to four sig...
If a u2 - 3v2 and b = 2uv + v2 evaluate (2a - b)(a - b2), when u = 1 and v = -1...
Find the integral values of x and y satisfying the inequality 3y + 5x ≤ 15, given that y >...
The expression x3 - 4x2 + cx + d is such that x + 1 is its factor, and its value is 1...