A hippopotamus can hold its breath for about 15 minutes. It can hold its breath 5 minutes longer than a sea otter. Use an equation to find how long a sea otter can hold its breath. A. 5 minutes B. 10 minutes C. 15 minutes D. 20 minutes

B. 10 minutes

Step-by-step explanation:

Let x represent the number of minutes that a sea otter can hold its breath. A hippopotamus can hold its breath for 5 minutes longer than x. So, the equation would be:

x + 5 = 15

Subtract 5 from both sides.

x + 5 = 15

x + 5 - 5 = 15 - 5

x = 10

A sea otter can hold its breath for 10 minutes.

Hope that helps.

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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