EASY POINTS:
A submarine is 450 feet below sea level. It descends 300 feet. Whats its new position?
(try to show your work)

750 ft below, -750ft relative to sea level

Step-by-step explanation:

-450-300=-750

this should help u pls give thx and a brainliest ;)

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.