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After two half-lives, the amount of radioactive substance remaining will be A 25% of the initial parent nuclei. B 75% of the initial parent nuclei. C 50% of the initial parent nuclei. D 25% of the daughter
answered
Jun 3, 2021
Chemistry
middle-school
7
votes
1.9k
views
A sample of 200 observations from the first population indicated that X1 is 170. A sam- ple of 150 observations from the second population revealed X2 to be 110. Use the .05 significance level to test
answered
Apr 25, 2021
Mathematics
college
7
votes
64.7k
views
How do we get nutrients into our cells?
answered
Apr 21, 2021
Health
high-school
6
votes
85.4k
views
2 1.1.4 Quiz: Amplitude, Frequency, and Speed Question 7 of 10 A mechanical wave that transports a lot of energy will have a A. fast wave speed B. low amplitude C. low frequency D. high amplitude
answered
Feb 10, 2021
Chemistry
college
5
votes
41.5k
views
-1.2w=9//////.........................
answered
Jan 30, 2021
Mathematics
high-school
3
votes
201k
views
2(3y − 1)(y − 3) is the factored form of
answered
Aug 12, 2020
Mathematics
high-school
4
votes
119k
views
2007 (B) - #1: Evaluate the extent to which the policies of President Lyndon B. Johnson were caused by the social, economic, and political problems of the United States.
answered
May 25, 2020
History
high-school
0
votes
225k
views
Two parallel lines are cut by a transversal and form a pair of alternate exterior angles. One angle measures (6x + 5)° and the other measures (7x – 4)°. Explain how to determine what those angles actually
answered
Jan 28, 2020
Mathematics
middle-school
5
votes
30.6k
views
If a car travels at an average speed of x miles per hour, how far would the car travel in 90 minutes ?
answered
Jan 27, 2020
Mathematics
middle-school
1
vote
81.2k
views
The equation for a line is 4x -3y=24. What is the slope of the line?
answered
Aug 20, 2019
Mathematics
middle-school
4
votes
105k
views
What did they say about the man who died from drinking shellac?
answered
Jul 14, 2019
History
high-school
5
votes
130k
views
On the east coast, where were most immigrants processed as they came to America?
answered
Jul 11, 2019
History
middle-school
4
votes
3.8k
views
The elderly spouse of a 74-year-old male client states that she has noticed that her husband "doesn't remember as well as he used to." she explains that he has been putting on his coat before his shirt,
answered
Feb 27, 2019
Social Studies
college
1
vote
196k
views
Find the value of 48 - 32 ÷ 4 · 2. 8
answered
Dec 8, 2018
Mathematics
high-school
2
votes
116k
views
In "The Story of Ruth," why do the Israelites cross over into the country of Moab? A.Israel is conquered by the Moabites. B. They want to invade and rule Moab. C. The king of Moab invites the Israelites
answered
Jul 17, 2018
English
middle-school
5
votes
82.4k
views
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