Asubmarine descends at a rate of 60 feet each minute. how long will it take to descend to a depth of 660 feet below the surface?

Okay so since their aren't any choices to choose from, let's do the math the long way. Now when you're finding the rate, distance, and time. We use the this concept in math:

d = rt or

(d = distance, r = rate, and t = time)

So first we have to divide with what we already know:

660 ÷ 60 = 11

So the answer is 11!

I hope this helps and please mark as brainliest!

Have a nice day too!<3

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

  n=   0.0000 - 0.3750 i  

  n=   0.0000 + 0.3750 i

step-by-step explanation:

one of these should be correct