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3 years ago

2(x+x+12) > 100 (why does the 20 character thing exist)

Mathematics

1 answer:

arlik [135]3 years ago

3 0

Answer:

x > 19

Step-by-step explanation:

2(x+x+12) > 100

2(2x+12) > 100

4x+24 > 100

4x > 76

x > 19

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PLEASE HELP ASAP !!!!! What would these be in scientific notation ?

Zarrin [17]

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3 years ago

Suppose you only have hundreds, ten's, and ones blocks. What are two different ways you could make the number 1,718

Viktor [21]

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3 years ago

Which is the correct definition of a function

Dima020 [189]

Answer:

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Step-by-step explanation:

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3 years ago

Solve the equation: 10 = -4 + x

Sonja [21]

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3 years ago

Read 2 more answers

Assume that 33.4% of people have sleepwalked. Assume that in a random sample of 1459 adults, 526 have sleepwalked.

lutik1710 [3]

Answer:

Step-by-step explanation:

Given that 33.4% of people have sleepwalked.

Sample size n =1459

Sample favourable persons = 526

Sample proportion p = $\frac{526}{1459} \\=0.361$

Sample proportion p is normal for large samples with mean = 0.334 and

std error = $\sqrt{\frac{pq}{n} } \\=\sqrt{\frac{0.334(1-0.334)}{1459} } \\=0.0123$

a) P(526 or more of the 1459 adults have sleepwalked.)

$=P(p\geq 0.361)\\=P(Z\geq \frac{0.361-0.334}{0.0123} \\=P(Z\geq 2.20)\\=0.5-0.4861\\=0.0139$

b) Yes, because hardly 1.4% is the probability

c) 33.4 is very less compared to the average. Either sample should be improved representing the population or population mean should be increased accordingly.

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3 years ago