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lawyer [7]
4 years ago
5

What percent of a sample of As-81 remains un-decayed after 132 seconds?

Mathematics
2 answers:
NikAS [45]4 years ago
6 0

Answer:14%

Step-by-step explanation:

expeople1 [14]4 years ago
3 0

Answer:

b

Step-by-step explanation:

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Are these answers right or some wrong? If some wrong plz answer them correct thanks!
maxonik [38]

You are wrong.

1, 2, 3 and 4 are correct.

5. 75%

6 is also correct

7. 100%

8. 50%

7 0
3 years ago
Read 2 more answers
Find the rule.
mezya [45]

The <em>first</em> series uses a <em>linear</em> function with - 1 as <em>first</em> element and 1 as <em>common</em> difference, then the rule corresponding to the series is y = |- 1 + x|.

The <em>second</em> series uses a <em>linear</em> function with - 3 as <em>second</em> element as 2 as <em>common</em> difference, then the rule corresponding to the series is y = |- 3 + 2 · x|.

<h3>What is the pattern and the function behind a given series?</h3>

In this problem we have two cases of <em>arithmetic</em> series, which are sets of elements generated by a condition in the form of <em>linear</em> function and inside <em>absolute</em> power. <em>Linear</em> <em>functions</em> used in these series are of the form:

y = a + r · x      (1)

Where:

  • a - Value of the first element of the series.
  • r - Common difference between two consecutive numbers of the series.
  • x - Index of the element of the series.

The <em>first</em> series uses a <em>linear</em> function with - 1 as <em>first</em> element and 1 as <em>common</em> difference, then the rule corresponding to the series is y = |- 1 + x|.

The <em>second</em> series uses a <em>linear</em> function with - 3 as <em>second</em> element as 2 as <em>common</em> difference, then the rule corresponding to the series is y = |- 3 + 2 · x|.

To learn more on series: brainly.com/question/15415793

#SPJ1

7 0
2 years ago
(07.03 MC)
wolverine [178]

Answer:

1

Step-by-step explanation:

~~~~~~4(3x-11) +23 = 5x -14\\\\\implies 12x -44 + 23 -5x +14 = 0\\\\\implies 7x-7=0\\\\\implies 7x = 7\\\\\implies x = \dfrac 77 \\\\\implies x = 1

3 0
2 years ago
Triangle ABC, with coordinates A(2, 3), B(3,5), C(7,4), Is dilated by a scale factor of 2. What are the coordinates of the dilat
Mademuasel [1]

Answer:

itsB or C

Step-by-step explanation:

4 0
3 years ago
Solve this system using substitution:
Sholpan [36]

Answer:

16x- 20y=20

Step-by-step explanation:

20y-20y =0

so answer is 16x

5 0
4 years ago
Read 2 more answers
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