A round sea turtle egg measures about 0.5 cm in diameter. What is the surface area of an sea turtle’s egg in square centimeters? 0.196
0.785
0.250
3.140

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation:

just took the test and my answers down below!

step-by-step explanation:

check the pic :

the answer is  

d.

21

i did this one. so you should get it right.