Question

who is genius in maths please send me the answer of this questions

Answer 1

(i) (x/2)+6=11
(ii) 3x+4x=28
(iii) 15+s = 65
(iv) (x/2)-15=10
(v) 8(x)+8(x+1)+8(x+2)=888
(vi) 2x+(x/2)=25

10.a. (x/2)-(3x/4)+5x/6=21
(3x-9x+10x)12=21
4x/12=21
x/3=21
x=63

b. (3y-2)/4-(2y+3)/3=(2/3)-y
(3y-2)/4-(2y+3)/3+y=2/3
(9y-6-8y-12+12y)/12=2/3
(13y-18)/12=2/3
13y-18=2/3×12
13y=8+18
y=26/13
y=2

c. 3(5z-6)-2(9z-11)=4(8z-13)-17
15z-21-18z+22=32z-52-17
15z-18z-32z=21-22-52-17
-35z=-70
z=2

d. (x+17)/(x+7)=3
x+17=3x+21
x-3x=21-17
-2x=4
x= -2
e. (3y+4)/(2-6y)= -2/5
5(3y+4)= -2(2-6y)
15y+20= -4+12y
15y-12y=-4-20
3y= -24
y = -8

Area of square = side × side
perimeter = 4 × side

Area of rectangle = length × breadth
perimeter = 2(l+b)

Area of parallelogram=length × height
perimeter = 2(sum of adjacent side)

Area of rhombus=1/2(product of length of diagonal)
perimeter = 4× side

Area of trapezium= 1/2(sum of paralll side )×height
perimeter = sum of all sides