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The green crab is of growing concern among local fishermen since its increasing presence is reducing the number of native species of shellfish. Suppose the predicted green crab population in the Puget Sound region is given by , where t represents the number of years after 1998. a)What does the model predict for the green crab population this year (2000)? b)In what year does this model predict there will be roughly 10,000 green crabs? (This is the year in which the green crabs will overwhelm the local Dungeoness crabs.)

ok well i described the diagram it is a square starting from the top left corner going clockwise the letters are M A T H, L cuts across diaganolly from a to t and line m cut across the middle horrizontally. The question is In the accompanying diagram, l and m are symmetry lines for square MATH. find rL° rM ° rL(H). I think the R stands for reflection but I dont under stand how to reflect it or what i am reflecting the answer choices are: (1) M (2) A (3) T (4) H

the moles fraction of oxygen molecules in dry air is 0.2095. what volume of dry air at 1.00atm and 25 degrees celsius is required for burning 1.00L of octane (C8H18 density= 0.7025 g/mL) completely, yielding carbon dioxide and water? how do you do this? please and thanks! choices: a. 718 L b. 367L c. 8980L d.1880L e. 150L

A piece of candy has 5 calories or 5000 calories. If it could be burned leaving nothing but carbon dioxide and water how much heat would if give off?

3.78 / 14 = x / 17 My answer was $4.57. Could you solve and tell me what you got? I'm not sure if I did this right.

If you have a function like F(x) = 0.5 Cos (2 x) + 0.7 sin (x) how do you find the max and mins of this function. I know how to get the derivative but then I can't find the zeros. Thanks.

Question 1 (Multiple Choice Worth 2 points) Ionic compounds are also known as salts. valence. organic. elements. -------------------------------------------------------------------------------- Question 2 (Multiple Choice Worth 2 points) The compound CO is an example of a(n) salt. element. ionic compound. covalent compound. -------------------------------------------------------------------------------- Question 3 (Multiple Choice Worth 2 points) Which of the following is not a characteristic of a covalent compound? It can be a solid, liquid or gas. It has a low melting point. It is made of two nonmetals. It is formed when atoms transfer electrons. -------------------------------------------------------------------------------- Question 4 (Multiple Choice Worth 2 points) The compound MgF is an example of a(n) metallic compound. covalent compound. ionic compound. element. -------------------------------------------------------------------------------- Question 5 (Multiple Choice Worth 2 points) The compound HCl is an example of a(n) covalent compound. ionic compound. element. salt. -------------------------------------------------------------------------------- Question 6 (Multiple Choice Worth 2 points) In what state or phase do most ionic compounds occur? Solid Liquid Gas Plasma -------------------------------------------------------------------------------- Question 7 (Multiple Choice Worth 2 points) When a metal bonds with a nonmetal, they form a(n) molecule. ionic compound. covalent compound. element. -------------------------------------------------------------------------------- Question 8 (Multiple Choice Worth 2 points) Covalent compounds are formed when a metal bonds with a metal. a nonmetal bonds with a nonmetal. a metal bonds with a nonmetal. a metal bonds with a noble gas. -------------------------------------------------------------------------------- Question 9 (Multiple Choice Worth 2 points) Sodium is an explosive metal. Chlorine is a poisonous gas. You would expect a compound made of sodium and chlorine to be very dangerous. very explosive and poisonous. very closely related to the element that makes up the majority of the compound. unrelated to the individual properties of sodium and chlorine. -------------------------------------------------------------------------------- Question 10 (Multiple Choice Worth 2 points) Which of the following is not true of a covalent compound? It is made of only nonmetals. It has a very high melting point. It is formed when atoms share electrons in a chemical bond. It can also be called a molecule. ----------------

As the words freshwater supply becomes increasingly limited, people in some countries suggest more schemes to get water. one suggestion is to tow icebergs from the North Atlantic Ocean, near Greenland, through the Mediterranean sea, to the Middle East. what would be some disadvantages, and some advantages to this scheme? This is urgent! I have a weather/climate project due tomorrow, so please help:)