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matrenka [14]
3 years ago
15

" Explain how you used the bar model in Exercise 2 to solve the problem "

Mathematics
1 answer:
3241004551 [841]3 years ago
3 0
You have to add exercise 2 so people can answer it.
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Will give brainliest to right answer please help!! 15 points -A sample of a radioactive isotope had an initial mass of 370 mg
Alex777 [14]

Answer:

78 mg

Step-by-step explanation:

370 mg - 110 mg = 260 mg (amount decayed in the 8 total years)

260 mg ÷ 8 years = 32.5 mg decayed per year

32.5 × 9 years (years between 2008 and 2017) = 292.5 mg

370 mg - 292.5 mg = 77.5 mg, rounded to 78 mg

4 0
3 years ago
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Lexy and Lonnel applied to the same university. They looked up the average SAT score of students admitted to that university. Le
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9514 1404 393

Answer:

  (a)  ❘-270 - 30❘

Step-by-step explanation:

One score is -270 and the other is +30. The difference is either of ...

  |30 -(-270)|

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  |-270 -30| . . . . . . matches choice A

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2 years ago
Which of these skills do you think you could teach someone else?
JulsSmile [24]
Writing algebraic expressions
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Given f(x) = V(3 x – 12) +2, what is the range in set notation?
Tpy6a [65]

Answer:

Step-by-step explanation:

[2,∞)

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MArishka [77]
C and B are correct,
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