03/01/19

Diffusion distance question
Diffusion is the movement of molecules from one location to another. The time t (in seconds) it takes molecules to diffuse a distance of x centimeters is given by t=x22D, where D is the diffusion... more
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03/01/19

degree s in celsius to the number of ice cream sold per day. See description below.
Orion is working with a data set that compares the outside temperature in degrees Celsius to the number of gallons of ice cream sold per day in a local grocery store. His data has a line of best... more
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03/01/19

1. Why is mitochondrial DNA important in the recovery of ancient DNA?
this is for a physical anthropology class
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02/26/19

how many ads did they recieve
On October 16, the Moore family received 23 pieces of mail, consisting of ads, magazines, bills, and letters. If they received three more magazines than bills, five more letters than magazines,... more
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02/20/19

Math problem about ages
My age is 3 years less than 5 times my sister's age. If I am 27, what is the sum of my age and my sister's age?
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02/13/19

how to solve this proportion??
Solving Proportions with Decimalssolve for x11/24.3=8/xx/8=12/14.5thx :)
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02/09/19

English question.
What can you infer about the narrator and her husband?The narrator thinks she needs rest, but Len thinks work is the cure for her illness.The narrator pretends to go along with her husband’s ideas,... more
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01/31/19

Biology Question
in sequential order , from first to last , rank these life forms: reptiles, age of fishes, swamplands, terrestrial life, vertebrates, shelled organisms
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01/24/19

physical science
1.     A homeowner plans to tile a room 25 ft by 21 ft with tile that is 9.0 in square and cost    $0.49/tile. The installers will charge $300 labor and the tile is taxed at 8.25%.   How... more
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12/13/18

Pretest - Biology
The earth's carbon cycle consist of the flow, cycling, and recycling of all the carbon on the earth. Every living organim's composition includes the element carbon. How does carbon become part of... more
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12/10/18

A chunk of radioactive material decays from a mass of 450 grams to 165 grams in two weeks, (14 days). Find the half-life time and the amount of material left after 70 days.
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12/06/18

Help me Please!!!

A concert promoter needs to take in at least $380,000 from ticket sales. The promoter charges $38 for floor seats and $20 for bleacher seats.I need to know how to graph it.I know the inequality... more
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11/16/18

What factors contributed to the early success of nylon and neoprene?
Organic chemistry please help!
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10/22/18

Anatomy and physiology
how do neutral mutations arise and why would you say they are fairly common?
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10/04/18

i want to know the sisters weight
its two siblings and the brother is fatter than his sister if the brothers so fat i want to know how small the sister is
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10/03/18

natalie walks from her house to a bus stop that is 460 yards away. how many values does the variable x assume as natalie walks from her house to the bus stop
natalie walks from her house to a bus stop that is 460 yards away. how many values does the variable x assume as natalie walks from her house to the bus stop
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09/29/18

Probability
If a parent had a genetic disorder that had 8 children, 7 were healthy but 1 child was found to have a genetic disease, what are the odds that the parent carries the disease? The nature of the... more
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09/26/18

If the sum of 95740 ft and the base of a mountain is 25 ft what is the distance
Summit is 5.740 feet above sea level Base of mountain is 25 feet below sea level  
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09/25/18

Word problem
Most nutritionists now agree that a healthy adult diet should include 25minus35 g of fiber each day. A breakfast of 2 blueberry muffins, 1 orange, and a 1-cup serving of cereal contains 14 g of... more
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09/23/18

How much of a nutrient solution needed to equal the amount of nutrient in 1g pill (20mg/g nutrient) and solution is 15Kmg nutrient per 1000g liter?
1 pill = 1g and has 20mg nutrient   liquid solution = 1000g/L and has 15000 mg of nutrient per liter   How much of the solution = one pill's worth of nutrient?
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09/11/18

What is a good book to learn advanced maths independently?
Preferably something to ease me into degree level maths as I want to expand my maths skills, however, I am not looking to attend university/college. Furthermore, are there any good books... more
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09/09/18

What is input device in chemistry
Physical chemistry
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09/06/18

What States of matter can fluids be?
This question is based on a heat and chemistry unit.
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09/04/18

anatomy question
Which of the following are general features of all connective tissues? (There may be more than one correct response.) - Epithelial cells - Protein fibers in an extracelluar matrix -... more
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08/28/18

what is biology
what is biology?  
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