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Sonja [21]
3 years ago
12

Solve each problem. Explain or show your reasoning.

Mathematics
1 answer:
Rufina [12.5K]3 years ago
5 0
1: 40 2: 78 3: 48 4: 26 5: 15 6: 70
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radium-226, which has a half-life of 1620 years, is used in medicine for treatment of disease. find the value of k for radium-22
sammy [17]
There will be a 25 grams left after 3240 years.

The half-life of Radium-226 is 1620 years. If we divide 3240 by 1620 the answer is 2. So that means the amount of Radium-226 will divide in half twice.

100 / 2 = 50 / 2 = 25
6 0
3 years ago
When using statistics in a speech, you should usually Group of answer choices manipulate the statistics to make your point. cite
NARA [144]

Answer:

Avoid Using too many statistics

Step-by-step explanation:

when a speaker is giving a speech, the listeners prefer main points to hearing too much of statistics. Too many statistics bore the audience and sometimes divert their attentions from the crux of the speech. If statistics are to be given, they must be clearly expressed and the source should be clearly stated.

Numbers that are of large decimal points can be rounded off so as not to confuse the audience and to make them grasp the main idea.

3 0
3 years ago
Find the slope using the following two points:<br> (2,-7) and (-1,6)
Advocard [28]

Answer:

13/-3

Step-by-step explanation:

Y2-Y1/X2-X1

7 0
3 years ago
which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x 6 into the quadratic formula? qu
zubka84 [21]
-3x^2-2x (+-)6=0 
ax^2+bx+c
a=-3
b=-2
c= either positive or negative 6 (there is no plus or minus in your question.)
What are the answer choices? It might help. 
4 0
3 years ago
This is the range of sample statistics obtained when many samples are selected?
Leno4ka [110]
The range of sample statistics obtained when many samples are selected is a sampling distribution. A sampling distribution is also a probability distribution of the statistics obtained in the large number of samples drawn from a specific population. It also shows every possible result that the statistic can take in every possible sample from the population and how often will each results happens.
4 0
3 years ago
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