54
35
1
23
Correct answer is A
8x÷(14)y=1
(23)x÷(2−2)y=20
23x−(−2y)=20
⟹3x+2y=0....(1)
log2(x−2y)=1
x−2y=21=2.....(2)
Solving equations 1 and 2,
x=12,y=−34
(x−y)=12−−34=54
If the solution set of x2+kx−5=0 is (-1, 5), find the value of k....
Express the force F = (8 N, 150°) in the form (a i + b j) where a and b are constants ...
Solve log2(12x−10)=1+log2(4x+3)...
The distance(s) in metres covered by a particle in motion at any time, t seconds, is given by S...
P=x:1≤x≤6 and Q=x:2<x<9 where x∈R, find P∩Q...
Express 75° in radians, leaving your answer in terms of π....
Which of the following is the same as \sin (270 + x)°?...
The line y = mx - 3 is a tangent to the curve y = 1 - 3x + 2x^{3} at (1, 0). Find the value ...