08/25/14
Length of Wire connecting two poles of different height.
An electrician must attach ground wires to the tops of two poles that are 48 feet apart. One pole is 32 feet tall, and the other pole is 18 feet tall. The electrician decides to use a single wire...
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08/25/14
A pre-algebra coin word problem
A girl saved nickels, dimes and quarters in a jar. She had as many quarters as dimes, but twice as many nickles as dimes. If the jar has 844 coins, how much money had she saved?
I am not sure...
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08/25/14
Bill and Cody each improved their yards by planting daylilies and shrubs. They bought their supplies from the same store. Bill spent $143 on 8 daylilies and 9
shrubs. Cody spent $157 on 8 daylilies and 11 shrubs. What is the cost of one daylily and the cost of one shrub?
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08/25/14
Which RNA base sequence would produce the amino acid sequence: lysine Arginine Cysteine?
I'm thinking... AAG-AGA-UGC OR AAG-CGA-UGU.
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08/25/14
Does the following chemical formula represents polar molecules that would be soluble in H20 @ 4 degrees celsius?
Answer I think... C2H5OH (ethyalchol)
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08/25/14
AP Biology question on writing equations
Write an equation that uses the products of photosynthesis as reactants and uses the reactants as products. Add energy as another product.
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08/24/14
Find the midpoint of the line segment joining the points R(5,3) and S (-4,4)
I don't understand how to do this? Can you help?
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08/24/14
Denoting the mass of old potatoes he buys by m kg, write doen an expression for the total cost of Joe's potatoes. What mass of new potatoes does he buy?
Joe buys 18kg of potatoes. Some of these are old potatoes at 22c per kilogram, the rest are new ones at 36c per kilogram...... Joe pays with a $5 note and receives 20c change.
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