All categories

3 years ago

What is the best estimate for the mass of a bicycle

Mathematics

2 answers:

Basile [38]3 years ago

6 0

Answer:

1o kilo dog

please mark me as brainliest please

olga2289 [7]3 years ago

3 0

Answer:

10 kilograms

Step-by-step explanation:

D for dog

You might be interested in

1) The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 5 years. Using the

8090 [49]

Answer:

1) 68%

2) 68%

Step-by-step explanation:

<h2>1) The ages of trees</h2>

We know the mean and the standard deviation.

The mean is:

$\mu=25$

The standard deviation is:

$\sigma=5$

The Z-score formula is:

$Z = \frac{x-\mu}{\sigma}$

For x=20 the Z-score is:

$Z_{20}=\frac{20-25}{5}=-1$

For x=30 the Z-score is:

$Z_{30}=\frac{30-25}{5}=1$

Then we look for the percentage of the data that is between $-1$ deviations from the mean.

According to the empirical rule 68% of the data is less than 1 standard deviations of the mean. This means that 68% of the trees are between 20 and 30 years old

<h2>2) Pizza delivery </h2>

First we calculate the Z-scores

We know the mean and the standard deviation.

The mean is:

$\mu=27$

The standard deviation is:

$\sigma=3$

The z-score formula is:

$Z = \frac{x-\mu}{\sigma}$

For x=24 the Z-score is:

$Z_{24}=\frac{24-27}{3}=-1$

For x=30 the Z-score is:

$Z_{30}=\frac{30-27}{3}=1$

Then we look for the percentage of the data that is between $-1$ deviations from the mean.

According to the empirical rule 68% of the data is less than 1 standard deviations of the mean. This means that 68% of pizzas are delivered between 24 and 30 minutes

8 0

3 years ago

What is the square root of 2

LenKa [72]

1.4142135623730950488

7 0

3 years ago

Read 2 more answers

A television that normally sells for $459 is on sale 30% discount what is the price of the. Television

ale4655 [162]

Answer:

$321.30

Step-by-step explanation:

7 0

3 years ago

Maria made some purchses at the Sunflower Market. She bought strawberries for $3.50, carrots for $2.25 and a bouquet of flowers

Eduardwww [97]

Answer:

$13.25

Step-by-step explanation:

First you add everything up to get you to $15.70, then the 20% is changed to .2 which you then multiply 15.70 by .2 giving you 3.14. You then take 15.70 minus 3.14 which then gets you to 12.56. Then you take the tax of 5.5% and times $12.56 by it, giving you 69 cents, as your tax. Add those together to get 13.25, and then your finished.

6 0

3 years ago

Read 2 more answers

5. The materials for a chain-link fence cost $6.25 per foot at an Ottawa home

lutik1710 [3]

Answer:

5.47

Step-by-step explanation:

6 0

3 years ago