Paper thickness ranges from .0032 inch to .0175 Inch. Carta folds a plece of paper .01 inch thick in half over and over until it is at least 25 layer thick. How many times does she fold the paper in halt?
folds
How many layers are there?
layers
How thick is the folded paper? (answer should be typed as 0.XX
in

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅

Find the distance between the pair of points a(-1,8) and b(-8,4)

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?