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Answers by Dorene O.

you use the quadratic formula, the two solutions are   -b+/-  sqrt(b2 -4ac)                                                                                           2a   so...

are you positive that all the details are exactly correct? The answer, if the numbers above are exact, should be a multiple of 4, 5 and 3, or 60. However as listed the totals do not add up. Dorene O.

Odysseus loves his wife Penelope and wants to return to Ithaca. However he is seduced by Calypso and although he refuses to become her husband and an immortal, he cannot break free so easily. He remains with Calypso for 7 years on her beautiful island. Calypso has the power to seduce men and keep...

assuming the (5). means 5 times what is in parentheses, we use the rule of multiply/divide before addition or subtraction, so inside the parentheses we get 15+y-2+z-1, and then combining, we get 12 + y + z. You then multiply each component inside the parentheses by 5, so final is...

CaO + H2O goes to Ca(OH)2 aqueous, that is, the Calcium oxide is in an excess of water so it forms an ionic compound as above. The Ca2+ ions and the OH- ions dissociate in the polar water solution. One hydrogen ion from the water binds with the oxygen in the calcium oxide and then...

The main branched structure (polysaccharide) is glycogen, which is highly branched, converted from sugars and stored in the liver for energy. The fatty acids, whether saturated or unsaturated, are long unbranched hydrocarbons. When combined into lipids, three fatty acids are attached to a glycerol...

Charlemagne was illiterate. One reason to hire scholars was for his own education, which was somewhat successful.   Also, he was administering a large territory via the Church. He needed to educate the priests and monks in the monasteries so that they could administer the territory,...

The processes are ionization and dissociation. For example, take the compound sodium chloride. Sodium wants to give up an electron and Chloride wants to gain an electron; this puts both compounds in a very stable state with 8 electrons in the outermost shell. In water, the sodium ions and chloride...

This phase is called the prosperity phase or economic expansion. There are several reasons why it is easy for consumers to buy. There is a high level of output and trade, which means high employment and higher levels (relative to the past) of income. Banks expand credit in this phase, which means...

both is the cosine of 2pi/3 and 4pi/3 = -0.5. since pi/3 = 60 degrees, 2pi/3 is 120 and 4pi/3 is 240, putting them in the 2nd and 3rd quadrant, where cosine is negative   You can then set up that x = -.5y = -.5z   xy = -.5y*y (substituting -.5y for x) and from the above...

The cotangent is 1/tan. From your mnemonic (All Students Take Calculus) (that's the one I like, anyway) you know that in quadrant I, All are positive, in quadrant II the Sine is positive, in quadrant III the Tangent is positive, and in quadrant IV the Cosine is positive.   The...

Assuming all numbers are weighted the same and nothing else contributes to your grade, this is a standard percent question. 340.63/395 =0.862   Multiply this fraction by 100 to get your percent grade in the class. Good!   Dorene O.

What IS answer (answer)

The maximum the sine can be is 1. Therefore, each theta has to be either at 0, pi, 2pi, etc. (0, 18, 360, ...)   You should look at a picture of the sine graph and the cosine graph. The cosine is the same shape as the sine but off by 90 degrees or pi/2. When the sine is 1, the cosine...