A rectangular block of metal is 256mm long, 152mm wide and 81mm high. If the metal block is melted to form a cube, find the length of each side of the cube.
( 147mm)
please explain with details

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.