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Answers by Kelly

Answers by Kelly
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16. A radioactive isotope has a half-life of 13 hours. Find the amount of the isotope left from a 400-milligram sample after 65 hours. If necessary, round your answer to the nearest thousandth. a. 25 mg
answered Mar 6, 2022
6 votes
42.1k views
A poll conducted in 2013 found that 55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard error for this estimate was 2.2%, and a normal distribution may be used to
answered Feb 22, 2022
1 vote
143k views
Is it reasonable to call pachacuti the founder of the empire? explain.
answered Jan 22, 2022
4 votes
116k views
Choose the correct pronoun to fill in the blank The babysitter seemed impatient when arrived. O us O them O they their
answered Jan 13, 2022
5 votes
25.3k views
In an arithmetic series, what is the sum of the first 22 terms if the first term is 12 and the common difference is 3?
answered Dec 20, 2021
4 votes
92.9k views
Who was John C Calhoun?
answered Dec 12, 2021
4 votes
193k views
Is the chemical equation balanced? Zn + 2HCl → ZnCl2 + H2 no, or yes
answered Sep 25, 2021
2 votes
114k views
In a well-written paragraph, explain which system of the human organism is most interesting to you. HELP PLEASE!
answered Sep 18, 2021
1 vote
101k views
Salim viendra avec moi à condition que je le _______ (conduire) jusqu’au rendez-vous. conjugate the verb in parenthesis in the subjunctive or infinitive form.
answered Jul 24, 2021
5 votes
118k views
Find the values Y = 3x - 7 Y = x - 1 X = Y =
answered May 26, 2021
4 votes
86.4k views
Four more nickels than dimes total dollar 25
answered Apr 13, 2021
2 votes
214k views
Please help me with my French work
answered Mar 3, 2021
4 votes
203k views
If f(-5) = 0, what are all the factors of the function f(x) = x2 - 19%+30? Use the Remainder Theorem.​
answered Feb 28, 2021
2 votes
114k views
What type of residential survey, also called a drive-by survey, is designed to show the location of the house and other large structures on the property?
answered Feb 22, 2021
2 votes
132k views
keely and Grayson played a board game. keely scored 128 points, which was 4 times as many points as Grayson scored
answered Jan 25, 2021
0 votes
99.0k views
Twelve of the 28 dogs at the shelter are purebred. What percent of the dogs are purebred?
answered Jan 22, 2021
4 votes
182k views
Z = 8, number of neutrons = 9 atomic symbol
answered Jan 20, 2021
3 votes
97.5k views
What is the shape of -2x^(2)+6y^(2)+5x+5y-4=0
answered Jul 8, 2020
2 votes
25.8k views
one positive number is 2 more than another. The sum of their squares is 34. Find the smaller number.​
answered Apr 18, 2020
3 votes
63.6k views
An employee is selected from a staff of 14 to supervise a certain project by selecting a tag at random from a box containing 14 tags numbered from 1 to 14. Find the formula for the probability distribution
answered Apr 1, 2020
2 votes
132k views
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