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Marrrta [24]
3 years ago
12

Cindy purchased 100 bricks. Each brick is within 1/8 inch of the advertised length of 8 inches. Cindy will line the bricks up en

d to end, with no space between them, to build a straight line path.
a) Write a single inequality that can be used to find the possible lengths of the path.
b) What is the minimum length of the path?
c) What is the maximum length of the path?
Mathematics
1 answer:
AURORKA [14]3 years ago
7 0
If each brick is within 1/8 inches of 8 inches, then that's an error of
 \frac{(\frac{1}{8})}{8} =\frac{1}{64}
If we then take the total length if each brick is 8 inches,
100*8=800
Then take 1/64 of this
800*\frac{1}{64}=12.5[tex] So the upper and lower bounds are 12.5 inches either side of 800 inches 787.5, and 812.5 So we can say that [tex]787.5 \leq x \leq 812.5
Which would be the answer to part a. parts b and c would be the lower and upper bounds, so 787.5 and 812.5 respectively
Hope this helps

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Answer:

x = 63

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The correct question is:

A study of consumer smoking habits includes 167 people in the 18-22 age bracket (59 of whom smoke), 148 people in the 23-30 age bracket (31 of whom smoke), and 85 people in the 31-40 age bracket (23 of whom smoke). If one person is randomly selected from this sample, find the probability of getting someone who is age 23-30 or smokes

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Step-by-step explanation:

We are given;

Number consumers of age 18 - 22 = 167

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Number of consumers of ages 31 - 40 = 85

Thus,total number of consumers in the survey = 167 + 148 + 85 = 400

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We can now solve the question.

Thus;

P(A or B) = (148/400) + (113/400) - (31/400)

P(A or B) = 230/400 = 0.575

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