An equation for estimating the speed of a tsunami is http://ncvps.blackboard.com/courses/1/Algebra1Sec05Fall11/ppg/respondus/exam_Quadratics_HW9/3331.gif 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 when the speed of the tsunami is 250 meters per second. Estimate to the nearest tenth.

Question

An equation for estimating the speed of a tsunami is http://ncvps.blackboard.com/courses/1/Algebra1Sec05Fall11/ppg/respondus/exam_Quadratics_HW9/3331.gif 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 when the speed of the tsunami is 250 meters per second.  Estimate to the nearest tenth.

anonymous · Answer

Can't view the image, the website needs login details.

anonymous · Answer

Dang . :( well how would i write it out?

anonymous · Answer

Depends on the formula.. you could use the equation editor below.

anonymous · Answer

$$s=3.1\sqrt{d}$$

anonymous · Answer

Rearrange:
$$d = \left(\frac{s}{3.1}\right)^2$$And substitute:$$d = \left(\frac{250}{3.1}\right)^2 = 6503.64..m \approx 6503.6m$$