Answers by John R Doner
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Answers by John R Doner

Answers by John R Doner
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Element X is a radio isotope with half lives of 11 yrs. The initial mass of element x is 60 grams. How much to the nearest tenth of the element remains after 25 yrs?
answered Oct 1, 2023
1 vote
130k views
In a math competition, every question that is answered correctly gets a score of 4. Wrong gets a score of -2. and not answered gets a score of -1. Ali got a score of 106 with 4 questions answered incorrectly
answered May 20, 2023
3 votes
109k views
Write this algebraic expression in word form
answered Mar 16, 2023
3 votes
48.8k views
Evaluate: 6.2x - 3y where x=2 and y=3 please help me I don't understand
answered Nov 12, 2022
11 votes
86.4k views
3 times the difference of 4 and 2 equals​
answered Oct 18, 2022
2 votes
161k views
Which of the following statements is FALSE? a. In 1820 the majority of the United States Congress was anti-slavery and the Northern votes outnumbered representatives from the South five to one. b. After
answered Sep 1, 2022
10 votes
146k views
Help me please! this is due today!! Describe the Cognates and False Cognate that are used in Spanish
answered May 6, 2022
5 votes
70.5k views
Andre went to purchase sporting goods. His total was $42. Due to a sale he saved $4. What percentage of the total regular price was his savings?
answered May 4, 2022
13 votes
39.9k views
O Question 20 Choose the country in Africa where French is NOT spoken. O Tunisia O Ivory Coast O South Africa
answered Mar 12, 2022
0 votes
91.6k views
HELP ME PLZ!!! You can complete three-tenths of a task in an hour. Your friend can complete one-fifth of the same task in an hour. How long will it take to complete the task if you work together? Explain.
answered Feb 10, 2022
7 votes
158k views
Which of the following is true? All statements are false A basic solution does not contain H3O+ A neutral solution contains [H2O] = [H3O+] A neutral solution does not contain any H3O+ or OH- An acidic
answered Dec 27, 2021
7 votes
82.6k views
P(2) = 14 and p(-3) = 0. Write one factor of p(x) and explain how you know
answered Nov 24, 2021
4 votes
22.6k views
Which human activity can have the greatest positive effect on global climate change by helping to reduce the amount of carbon dioxide in the atmosphere
answered Nov 20, 2021
7 votes
24.2k views
A survey asks students who walk or ride a bike to school whether they live more than one mile from school. The results are shown in the table. Based on the results, which conclusion is best?
answered Oct 5, 2021
4 votes
232k views
Which of the following is one of the functions of a wetland? A. drought prevention B. insect control C. forest fire control D. flood control
answered Sep 23, 2021
2 votes
123k views
Diane serves breakfast to two groups of children at daycare. One box of Oaties contains 12 cups of cereal. She needs ⅓ cup for each younger child and ¾ cup for each older child. If there are 11 younger
answered Sep 18, 2021
6 votes
150k views
Simplify a^3 x b x a^3 x b
answered Aug 15, 2021
6 votes
227k views
What can the major events of a cell cycle tell me?
answered Aug 10, 2021
3 votes
208k views
Last Question 10 minutes left Middle School Math
answered Aug 9, 2021
7 votes
62.5k views
Find the slope of the line from the graph.
answered Jul 25, 2021
5 votes
226k views
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