Amerchant has coffee worth $80 a pound that she wishes to mix with 70 pounds of coffee worth $70 a pound to get a mixture that can be sold for $75 a pound. how many pounds of the $80 coffee should be used?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.