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A sample of U-235 has a half-life of 700 million years. What fraction of the parent material will remain after 2800 million years? a. 1/2 b. 1/4 c. 1/8 d. 1/16 e. 1/32
answered
Dec 30, 2024
Physics
high-school
2
votes
99.7k
views
For the final discussion activity in this course, revisit any student’s comment in lessons 26–29 of unit 6 to "peer review" his or her discussion post. When doing a "peer review" of a discussion post,
answered
Dec 25, 2024
Social Studies
high-school
3
votes
56.4k
views
What is an equation of the line that passes through the points (-8, 6) and (-6, 3)? Answer Attempt 1 out of 2
answered
Dec 9, 2024
Mathematics
college
6
votes
39.7k
views
What is an equation of the line that passes through the points (-2, -6)(−2,−6) and (-1, 0)(−1,0)?
answered
Oct 15, 2024
Mathematics
middle-school
2
votes
61.9k
views
Which statement about the importance of particular nutrients is false? a) Nitrogen is crucial for the synthesis of nucleic acids. b) Phosphorus is not essential for prokaryotic growth. c) Carbon is a key
answered
Oct 10, 2024
Biology
high-school
6
votes
222k
views
Jalon has a coin jar at home that contains quarters and dimes. Quarters are worth $0.25 and dimes are worth $0.10. He has Q quarters and D dimes. How much would 5 quarters be worth? 26 quarters? 120 quarters?
answered
Oct 3, 2024
Mathematics
high-school
4
votes
38.9k
views
Which expression is equivalent to 3.5b + 4.5(0.5b) - 0.5 - 1.5b? 1) 2.5b - 1 2) 2.5b - 2 3) 2.5b - 0.5 4) 2.5b - 3
answered
Aug 26, 2024
Mathematics
high-school
5
votes
102k
views
Why the rate of carbon dioxide production is slow at low temperature?
answered
Apr 29, 2024
Biology
high-school
3
votes
217k
views
What is the 19th century financial instrument that protected businesses from being sued?
answered
Feb 27, 2024
History
high-school
4
votes
31.2k
views
Superman needs to save Lois from the clutches of Lex Luthor. After flying for 11 seconds, he is 1473meters from her. Then at 13 seconds he is 1359 meters from her,What is Superman's average rate?meters
answered
Oct 21, 2023
Mathematics
college
5
votes
233k
views
Which statement best describes the earliest ancestors of plants? They had no competition. They were vascular. They had seeds. They lived in water.
answered
Aug 17, 2023
Geography
high-school
3
votes
161k
views
Writing in chronological order means that your writing __________.
answered
Jun 1, 2023
SAT
high-school
10
votes
201k
views
Words and phrases that describe how things look, feel, sound, taste, or smell are called sensory details. Write down sensory details from lines 15-23.
answered
Feb 7, 2023
English
college
14
votes
229k
views
Please help with math problem give 5 star if do
answered
Feb 5, 2023
Mathematics
college
6
votes
33.1k
views
Andre rode his bike at a constant speed. He rode 2 1/3 miles in 11 2/3 minutes. (a) Write an equation that represents the distance d he rides (in miles) after time t (in minutes) passes. (b) How long will
answered
Dec 26, 2022
Mathematics
middle-school
6
votes
193k
views
What is 39,182 written in expanded form? 3 x 10,000 + 9 x 1,000 + 1 x 100 + 8 x 10 + 2 x 1 3 x 10,000 + 9 x 1,000 + 8 x 100 + 1 x 10 + 2 x 1 3 x 30,000 + 9 x 9,000 + 1 x 100 + 8 x 80 + 2 x 2 3 x 10,000
answered
Nov 27, 2022
Mathematics
college
6
votes
231k
views
Add and write your answer in scientific notation 3.2x 10^8 +4.6 x 10^8
answered
Jul 8, 2022
Mathematics
high-school
1
vote
69.5k
views
English English question ASAP
answered
Mar 1, 2022
English
college
6
votes
99.6k
views
Work out the reciprocal of 0.125
answered
Jan 22, 2022
Mathematics
high-school
3
votes
40.3k
views
What day did christopher columbus die
answered
Jan 20, 2022
Social Studies
college
10
votes
49.2k
views
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