Answer:
12
Explanation:
GIven: an isosceles trapezoid ABCD with AD = 28, BC = 12, and BE = 9.
We can see that triangle BEA is a right triangle, so let's use the Pythagorean Theorem to solve for length AB.
To use the Pythagorean Theorem, we need the lengths of both legs. But we only have one! So let's solve for AE.
Now we know the lengths of both legs of right triangle BEA, so let's use the Pythagorean Theorem to solve for the hypotenuse, AB!
Pythagorean Theorem: 
where 
and 
are the legs and 
is the hypotenuse.
≈ 
<span>well this would be all of them Belarus, Bulgaria, Czech Republic, Hungary, Moldova, Poland, Romania, Russia, Slovakia, and Ukraine.</span>
Answer:
D. Fossils of the Cambrian Period
Explanation:
The Cambrian Period (541–485.4 million years) is the period known for the explosion of life on Earth, when all the major phyla of multicellular organisms originated, and almost all the groups we find today, in a period of time geologically short.
The primitive faunas of this period had numerous morphological patterns, an immense variety of species, mostly soft-bodied animals, and new ecological strategies such as predation, burying themselves deep in the sediment and building complex, branched tunnels. They also featured some relatively large skeletal animals, such as trilobites, brachiopods, and
Answer:
The social structure, religious beliefs, economic prosperity and urbanization within each country are likely to affect birth rates as well as abortion rates, Developed countries tend to have a lower fertility rate due to lifestyle choices associated with economic affluence where mortality rates are low, birth control
Explanation:
Research Project
