Asubmarine dove 35 feet per hour for 7 hours. how deep os the submarine if it originally started at 107 feet below sea level

Final submarine depth below sea level is 352 feet.

Explanation:

35 feet per hour means 35 feet for every hour

So the total change in depth is 7 x 35

The starting depth was  

107  feet

Final depth of 107 + 245 equals 352

h/o/e/s mad

step-by-step explanation:

si si si

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct