help plz this is question paper
Answers
Q.3
6 (-x)= -24
-6x = -24
-x = -24/6
x = 4
20 (-x) = 100
-20x = 100
-x = 100/20
x = -5
Q.6
8^0 = 1
5^-3 = -125
Q. 8
i) January, February, March
Q. 13
(a^2+5a+6) / (a+2)
a(a+2)+3(a+2)
(a+3)(a+2)
thus , a^2+5a+6 / a+2 = a+3
x+3x+6 = 14
4x+6 = 14
4x= 14-6
4x= 8
x= 8/4
x= 2
5x+2 = 3x+12
5x-3x = 12-2
2x = 10
x = 10/2
x = 5
Complement angles of :
25° = 90-25 = 65°
90° = 90-90 = 0°
Supplementary angles
(4x+28) + (x-8) = 180°
4x+28+x-8 = 180
5x + 20 = 180
5x = 180-20
5x = 160
x = 160/5
x = 32°
4x+28 = 4×32+28 = 128+28 = 156°
x-8 = 32-8 = 24°
156° + 24° = 180°
Angles 5x and 4x form linear pair thus,
5x + 4x = 180°
9x = 180
x = 180/9
x = 20°
5x = 5 × 20 = 100°
4x = 4 × 20 = 80°
angle x and 4x form linear pair, thus
x + 4x = 180°
5x = 180
x = 180/5
x = 36°
4x = 36×4 = 144°
angle 40° and 4x form linear pair, thus
40+4x = 180°
4x = 180-40
4x = 140
x = 140/4
x = 35
4x = 4 × 35 = 120°
I'm in hurry so this much was possible, i hope it will be helpful