Show that in any euclidean space r": (a) the set {0,} consisting only of the zero vector is a subspace of r". (b) r" is itself a subspace of r". hint: show that both subsets are non-empty and closed under vector addition and scalar multiplication.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

it would take 7/10 of an hour too fill the pool.

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.