Answer:
<em>1 cm^2 : 9 m^2</em>
Step-by-step explanation:
The scale factor of an area is the square of the scale factor of a length.
The scale for lengths is 1 cm : 3 m.
You now square that scale to get the scale of the areas.
Scale of areas:
(1 cm)^2 : (3 m)^2
1 cm^2 : 9 m^2
Answer:
D. The standard deviation is known and n > 30.
Step-by-step explanation:
- Your sample size is greater than 30.
- Data points should be away from each other.
- Your data should be commonly categorized.
- Your data should be randomly picked from a population. Each item should have an equal chance of being selected.
- The sample sizes should be equal.
If you're looking for x then it would be x=18 since you add 13 to both sides to have x alone
A disjunction is false if both parts of the disjunction are false; otherwise, it is true
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Choice A
4-3=2 is false
6*3=9 is false
both parts are false, so overall the entire disjunction is false
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Choice B
5*6=30 is true
3+4=7 is true
Neither part is false, so overall the entire thing is true
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Choice C
8+3=11 is true
5*4=23 is false
While second piece is false, the overall disjunction is true. The first part (true) makes the whole thing true.
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Choice D
7+6=13 is true
5*2=10 is true
Neither part is false, so overall the entire thing is true
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In summary, we have
A. False
B. True
C. True
D. True
Making choice A the only answer that is false. So choice A is the final answer
