Determine if ww is a vector space and check the correct answer below.

a. ww is a vector space because it can be expressed as w=span{}w=span{}.

b. ww is not a vector space because it does not have a zero element.

c. ww is not a vector space because it does not have additive closure.

d. ww is a vector space because it contains the zero element.

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air