Question

Please assist me with this tsunami speed​

Answer 1

c.
`\displaystyle d = (s^2)/(9,61)`

Step-by-step explanation:

`\displaystyle (s)/(3,1) = (3,1√(d))/(3,1) → [(s)/(3,1)]^2 = √(d)^2 → (s^2)/(9,61) = d`

I am joyous to assist you anytime.

Answer 2

`\text{c.} \quad d=(s^2)/(9.61)`

Explanation:

In any "solve for" scenario, you identify what operations are performed on the variable of interest, then undo them in reverse order.

Here, the square root of d is multiplied by a constant. To undo these operations, we first divide by the constant. That gives ...

`(s)/(3.1)=√(d)`

Then, we square both sides of the equation to undo the square root:

`\left((s)/(3.1)\right)^2=d\\\\d=(s^2)/(9.61)`

This matches choice C.