A submarine to study changes in the sea level of the pacific ocean descends 420 feet below sea level. 3 hours later, it makes an ascent of 170 feet. What is the submarines new position?

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

it's possible to build a triangle with side lengths of 3, 3, and 9.- true ( b.)

the answer is  

c.

14,469 cubic feet

i know this one is right