What is the smallest possible length of screw needed to pass through two pieces of wood one that is 5/7in. and one that is 9/10in?

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

This is so hard and it’s for a test

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