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.
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The Romanovs were to be killed because they were the supreme symbols of autocracy. The irony was that, in Yekaterinburg, the Bolsheviks had turned them into the opposite of aristocrats.
Answer:
Higher temperature increases the speed of solubility
Explanation:
"Solubility" refers to the ability of a solute to be dissolved in a solvent. Solubility and temperature are <em>directly proportional</em>. This means that <em>as the temperature increases, the solubility of a substance increases too</em>. In the same manner, <em>as the temperature decreases, the solubility of a substance decreases too.</em>
High temperature produces<u> high heat (increase kinetic energy) that triggers the solvent to break the solutes apart.</u> This is mostly true for many solid-state solutions.