Answer:
C) In step 3, he should have determined which square is closest to 18.
Step-by-step explanation:
17.64 also rounds to 18. 17.64 differs from 18 by ...
18 -17.64 = 0.36
whereas 18.49 differs from 18 by ...
18.49 -18 = 0.49
Hence 17.64 is closer to 18 and we might expect 4.2 to be closer to √18 than is 4.3.
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The actual root of 18 is about 4.243, so 4.2 is a better approximation.
Answer:
C) 2(x+1)=2x+1 ( No Solution )
Step-by-step explanation:
1)

2)

3)

4)

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Answer:
3/7.
Step-by-step explanation:
The total number of ways to pick 4 out of 8 = 8C4
= 8!/ 4!4!
= 70 ways.
The number of ways when 2 are women = 5C2 * 3
= 10 * 3
= 30.
So the required probability = 30/70
= 3/7.
Answer:
20 less than a number is equal to the number.
Step-by-step explanation:
1 | 2.5
2 | 5
3 | 10
4 | 20
5 | 40
6 | 80
7 | 160
8 | 320
9 | 640
Hopes this helps!!!