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Virty [35]
3 years ago
11

A sample of a radioactive isotope had an initial mass of 450 mg in the year 2005 and decays exponentially over time. A measureme

nt in the year 2012 found that the sample's mass had decayed to 310 mg. What would be the expected mass of the sample in the year 2017, to the nearest whole number?
Mathematics
1 answer:
yawa3891 [41]3 years ago
8 0

Answer: 238

Step-by-step explanation:

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Two groups of students were asked how far they lived from their school. The table below shows the distances in miles:
pychu [463]

Answer:

C. The value for Group A is double the value for Group B

Step-by-step explanation:

First, you add all the numbers from each group.

A: The distance in total is 39.06

B: The distance in total is 19.53

To find the mean, which is another way of saying the average, you divide the sum with how many numbers there are. (hope this makes sense, I suck at wording)

A: There are 9 numbers in total, hence, 39.06/9 = 4.34

B: There are 9 numbers in total, hence, 19.53/9 = 2.17

Those are the mean distance for the two groups.

2.17 * 2 = 4.34

Hence, C (third statement)

3 0
3 years ago
Read 2 more answers
What is the interquartile range of the text 5,7,7,7,8,10,12,15,20,22
Rudiy27

Answer:

8

Step-by-step explanation:

8 0
3 years ago
Which statement best describes a method that can be used to sketch the graph. y = |x - 2| a. Translate the graph of y = |x| two
ser-zykov [4K]

f(x) + n - translate the graph of f(x) n units up

f(x) - n - translate the graph of f(x) n units down

f(x + n) - translate the graph of f(x) n units left

f(x - n) - translate the graph of f(x) n units right

--------------------------------------------------------------------------

We have

y = |x - 2|

f(x) = |x| → f(x - 2) = |x - 2|

<h3>Answer: c. Translate the graph of y = |x| two units right.</h3>
6 0
3 years ago
If the sum of the measures of the interior angles of a polygon is 2340, find the number of sides of the polygon.
vladimir1956 [14]
14 

The polygon is a 14gon / it has 14 sides
7 0
3 years ago
Type SSS, SAS, ASA, SAA, or HL to
Tems11 [23]

9514 1404 393

Answer:

  ASA

Step-by-step explanation:

The shared angle, the marked angle, and the marked sides between those angles are congruent. That is, you have congruent Angle, Side, Angle, so the ASA postulate applies.

6 0
3 years ago
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