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4 years ago

when Miguel was six years old his little sister leila was half of his age if Miguel is 40 years old today how old is leila

Mathematics

1 answer:

AleksandrR [38]4 years ago

8 0

Answer:

Leila is 37 years old.

Step-by-step explanation:

If Leila was half Miguel's age when Miguel was 6, Leila had to have been 3 years old. This tells you that Leila is 3 years younger than Miguel. Subtract 3 from 40 to get 37.

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Which of the following shows the least expensive unit price?

Arlecino [84]

It would be the first one because each orange costs $0.34

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3 years ago

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NeX [460]

Answer:

R300

Step-by-step explanation:

To solve:

Multiply 25 by 6 to represent the earnings of a shift.
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3 years ago

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

To make green paint, students mixed yellow paint with blue paint. The table below shows how many yellow and blue drops from a dr

Gekata [30.6K]

Answer:

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