There are 21 juice bottles out of which 7 bottles are full. 7 are half-full and the remaining 7 are empty to divided amongst 3 friends equally. You don't have any measuring device. After dividing them ( both bottles and juice ) equally how mach empty bottles each will get?

each friend would have 3 and 1/2 bottles of juice meaning each friend would have 3 fully empty bottles.

for any of you who need the translation here it is

step-by-step explanation:

find the angular size of the equatorial radius of the earth, if the horizontal parallax of the sun

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.