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A sample contains 100 g of a radioactive isotope. How much radioactive isotope will remain in the sample after 2 half-lives? OA. 50 g OB. 25 g OC. 75 g OD. 100 g
asked
Aug 25, 2020
Physics
middle-school
2
answers
5
votes
18.3k
views
How did the Spanish get wealth from its new lands?
asked
Jul 4, 2020
History
middle-school
1
answer
1
vote
184k
views
In medieval Europe an important technological advance was the use of the padded horse collar for plowing. Once this idea was thought of, other people used it. This illustrates that knowledge is generally
asked
May 17, 2020
Social Studies
high-school
1
answer
4
votes
118k
views
Help meeeeeeeeeeeeeeeee​
asked
Jan 12, 2020
Mathematics
middle-school
1
answer
4
votes
197k
views
Rhesus monkeys often acquire a fear of snakes after watching the reactions of other monkeys around snakes. based on what is known about learning, you should conclude that rhesus monkeys may acquire a fear
asked
Nov 4, 2019
Social Studies
college
1
answer
3
votes
36.4k
views
Two squares are drawn. The larger Square has area of 400 in.². The area of the two squares have a ratio of 1 to 4. What is the side length S of the smaller square?
asked
Oct 8, 2019
Mathematics
high-school
2
answers
5
votes
177k
views
Find the arc of a semi-circle when the diameter is 8.
asked
Aug 25, 2019
Mathematics
middle-school
2
answers
4
votes
199k
views
For art class you need to make a scale drawing of the Parthenon using the scale 1 in = 5 ft. The Parthenon is 228 ft long. How long should you make the building in your scale drawing?
asked
Aug 18, 2019
Mathematics
middle-school
1
answer
2
votes
79.5k
views
Which document is most efficiently created in spreadsheet software? a balance sheet a recipe a resume a short story
asked
Apr 8, 2019
Computers and Technology
high-school
2
answers
2
votes
2.5k
views
What is least likely to represent social and cultural barriers to polio vaccination in india?
asked
Oct 5, 2018
Social Studies
college
1
answer
5
votes
59.5k
views
How do you find the radius of the circle without a radius?
asked
Aug 18, 2018
Mathematics
high-school
2
answers
3
votes
4.5k
views
Which of these illustrates the correct way to embed a paraphrase?
asked
Jul 24, 2018
English
high-school
1
answer
2
votes
215k
views
How to you get the mean in math
asked
Aug 6, 2017
Mathematics
high-school
1
answer
1
vote
149k
views
Why did people immigrate to the united states in the nineteenth century? A) Rich water source, high wages, and the right to vote' B) Religious freedom, and democracy C) Gold, Potatoes, and freedom D) Fertile
asked
Nov 1, 2016
History
high-school
2
answers
3
votes
115k
views
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