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The half-life of cesium-137 is 30 years. Suppose we have a 40 mg sample. Exercise (a) Find the mass that remains after t years. Step 1 Let y(t) be the mass (in mg) remaining after t years. Then we know
answered
Jul 19, 2020
Chemistry
high-school
2
votes
54.8k
views
What lesson does atticus teach scout that could be a possible theme for this novel?
answered
Oct 18, 2019
English
high-school
3
votes
195k
views
What legal principle gave Marbury a right to some remedy under law?
answered
Mar 23, 2019
History
middle-school
5
votes
49.4k
views
A hair salon by 12 headbands for $24 at this rate how much will 48 headbands cost
answered
Mar 18, 2019
Mathematics
middle-school
7
votes
87.8k
views
What is the quotient of 3 and 18
answered
Mar 9, 2019
Mathematics
middle-school
6
votes
232k
views
what is the magnitude of the compression forces (assumed to be horizontal) acting on both sides of the center board that is sandwiched between two other boards.Given that the board the board sandwiched
answered
Mar 4, 2019
Physics
middle-school
3
votes
209k
views
22. A citation for driving 16 mph or more over the lawful speed limit puts __________ points on your license. A. 2 B. 3 C. 4 D. 5
answered
Jan 29, 2019
Health
middle-school
3
votes
85.1k
views
If a box is 36 inches long, 24 inches wide, and 12 inches tall, what is the volume of the box?
answered
Jan 26, 2019
Mathematics
high-school
5
votes
31.7k
views
Read the sentence from Poe's "The Black Cat." "It was this unfathomable longing of the soul to vex itself to offer violence to its own nature to do wrong for the wrong's sake only that urged me to continue
answered
Sep 25, 2018
English
middle-school
5
votes
71.0k
views
Completely simplify the expression 4x+10+6x+2x4x+10+6x+2x by combining like terms.
answered
Sep 4, 2018
Mathematics
middle-school
4
votes
172k
views
The social contract theory does not allow the governed to invalidate its agreement with the government.
answered
Jul 15, 2018
History
high-school
1
vote
188k
views
“Ah! well a-day! what evil looks Had I from old and young! Instead of the cross, the Albatross About my neck was hung.” In Samuel Taylor Coleridge’s “The Rime of the Ancient Mariner,” how do readers know
answered
Apr 25, 2018
English
high-school
4
votes
93.5k
views
What does Soy una espia mean in English? A. I have a sore. B. I'm a spy. C. I'm a spirit. D. I'm a little sick.What does Soy una espia mean in English? A. I have a sore. B. I'm a spy. C. I'm a spirit.
answered
Mar 4, 2018
Spanish
high-school
5
votes
195k
views
The marginal cost curve is generally ______________, because diminishing marginal returns implies that additional units are ________________________.
answered
Jan 6, 2018
Mathematics
high-school
3
votes
144k
views
9 friends divided 8 bags of apples equally between them enter the division that represents by this situation as a fraction
answered
Nov 5, 2017
Mathematics
middle-school
6
votes
148k
views
What is the last thing Robinson Crusoe finds on the shipwreck? a. a pair of cats that were hiding below the deck b. money that was hidden in a secret drawer c. a stash of gunpowder that he previously overlooked
answered
Nov 16, 2016
Biology
high-school
4
votes
76.8k
views
According to a 1993 World Bank report, East Asian economic growth in the late twentieth century was due, in part, to A. governments that favored import substitution over export competitiveness. B. relatively
answered
Jul 21, 2016
History
high-school
2
votes
43.4k
views
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