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mash [69]
3 years ago
6

Jenny is building a rectangular garden around a tree in her yard. the southwest corner of the garden will be 2 feet south and 3

feet west of the tree. the northeast corner of the garden is 1 foot north and 4 feet east of the tree. what will be the perimeter of jenny's garden?
a. 10 ft
b. 20 ft
c. 21 ft
d. 25 ft
Mathematics
2 answers:
irina [24]3 years ago
5 0
3 feet west + 4 feet east means that the length of the rectangle is 7
2 feet south and 1 foot north means that the height (or width) 3.
Since the rectangle is 3 ft by 7ft the total distance around (perimeter) is 2 (l+w) or in this case 2 (7 +3) = 2 (10) = 20 ft  Answer b
Drawing a picture helps.
VladimirAG [237]3 years ago
4 0

1. B

2. B

3. C

4. B

5. C

6. D

7. B

8. D

9. A

10. C


100% Correct

Hope this helps! :)


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Answer:

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1. Assuming the failure is in the calculator, not the operator, and the failures are independent, the probability of finishing with at least one working calculator is the complement of the probability that both will fail. That is ...

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2. The odds in favor of finishing an exam starting with only one calculator are 0.92 : 0.08 = 11.5 : 1.

If two calculators are brought to the exam, the odds in favor of at least one working calculator are 0.9936 : 0.0064 = 155.25 : 1.

This odds ratio is 155.25/11.5 = 13.5 times as good as the odds with only one calculator.

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My assessment is that there is significant gain from bringing a backup. (Personally, I might investigate why the probability of failure is so high. I have not had such bad luck with calculators, which makes me wonder if operator error is involved.)

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w = 5

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