An equation for estimating the speed of a tsunami is s=3.1√d where d is the depth of the ocean in meters and s is the speed in meters per second. find the depth of the ocean in meters when the speed of a tsunami is 250 meters per second. round your answer to the nearest tenth of a meter. a. 6503.6 b. 7523.7 c. 2402.5 d. 2231.4

  A.  6503.6

Step-by-step explanation:

Fill in the given number and solve.

  250 = 3.1√d

  250/3.1 = √d

  (250/3.1)² = d ≈ 6503.6 . . . meters . . . . matches selection A

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3