rebika

a water tank is supplied by a pipe of diameter50cm the pipe is replaced by k pipe each of which has diameter 10cm.find k.

the areas of the three non parallel face of right rectangular prism are in the ratio 15:9:4 and its volume is 300.determine the lengths of its sides.

if the line through A(k,p) and B(3,2) and the line through C(k-1,p+2) and D(-4,3) meet at(1,-2).find the values of k and p.

5 years from now a boy's age will be 2 time the square of what it was 5 years ago.how old is he now? a)15/2 years c)7 years b)3 years d) 8 years

why oxides of carbon ,carbonates ,hydrogen carbonates ,cyanides and cyanates are not organic compound?

1.08m

volume 3.14*0.03*120 11.304m cube

113040m cube

at room temperature=20°c v=f*wavelength v=342.2m/s wave length=10m f=342.2m/s/10m 34.22Hz

x^3+2x^2-5ax -7/x+1 R1= 5a-6 x^3+ax^2-12x+6/x-2 R2=4a-10 2R1+R2=6 2(5a-6)+4a-10=6 a=2 use remaider theorem .

let vy=is vertical componet then t' time of flight x=ut' y=vyt'-gt'^2/2 then eliminate the two equation H= y +gt^2/2 and to find vy vy=yu/x +gx/2u D+x=ut substitute the tow equation, D=usqrt(2H)/g -x