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3 years ago

Chris has a bag of sweets. there are more than 20 sweets in a bag.

Mathematics

2 answers:

MA_775_DIABLO [31]3 years ago

7 0

No he is not correct

kiruha [24]3 years ago

4 0

The answer is no because if it is over 20 but he shared is equally with 6 people then it stands to reason that the amount was exactly 24 which isnt a prime number

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A rectangular field is 50 m long and 30 m broad. All sides of the field have to be walled. Find out the length of the wal

Ulleksa [173]

Answer:

=50×30

= 1500m.

Step-by-step explanation:

field = length = breadth

4 0

3 years ago

Round the fraction 3^3/2 to the nearest whole number

SCORPION-xisa [38]

Evaluating 3^3/2 gives us 5.196152423, so we can round this to 5.

4 0

3 years ago

Round each number to the nearest ten. What is the best estimate for the answer to 343.42 – 39.87?

Nikolay [14]

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Hope it helped you

7 0

4 years ago

Relationships between means, standard deviations, X values,and z-scores

Vlada [557]

Answer:

a) The average salary of firefighters in Portugal is $583.

b) The standard deviation of the salary of firefighters in Portugal is $319.8

Step-by-step explanation:

We are given the following in the question:

a) Standard Deviation, σ = $145.80

We are given that the distribution of salary of professor is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

A salary of $510.10 has a z-score of -0.50.

Putting values, we get,

$-0.50 = \displaystyle\frac{510.10-\mu}{145.80}\\\\\mu = 0.50(145.80) + 510.10\\\Rightarrow \mu = 583$

Thus, the average salary of firefighters in Portugal is $583.

b) Mean, μ = $2,132

We are given that the distribution of salary of computer programmers is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

The salary of $2,291.90 has a z-score of +0.50

Putting values, we get,

$0.50 = \displaystyle\frac{2291.90-2132}{\sigma}\\\\\sigma= \frac{2291.90-2132}{0.50}\\\\\sigma = 319.8$

Thus, the standard deviation of the salary of firefighters in Portugal is $319.8

6 0

4 years ago

The length of a rectangle is 4 cm greater than the width of the rectangle.

Sunny_sXe [5.5K]

Answer: a) 9 cm

explanation: since the length of the rectangle is 4 cm greater than the width, you can just take 9 cm (the length) minus 4, which gets you 5 cm. if we use the area formula (length x width), then 9 x 5 = 45 square cm.

5 0

3 years ago