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2 years ago

At hockey practice, Coach Taylor always sets aside 20% of the total time for players to

Mathematics

2 answers:

svp [43]2 years ago

7 0

Answer:

12 minutes

Step-by-step explanation:

olasank [31]2 years ago

3 0

Answer:

12 minutes

Step-by-step explanation:

Take 60 minutes (The total time of pratice) and multiply it by .2 (20% in decimal form) doing this should get you 12

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Tim explained a function in words and Paul wrote an equation. Tim: The amount of money in a savings account increases at a rate

masya89 [10]

D .........is the answer

4 0

1 year ago

a box holds nine smaller boxes. each of the smaller boxes holds nine plastic containers. each plastic contai.er holds nine bags.

svp [43]

So, basically ..you just multiply
9*9*9*9
6561

4 0

2 years ago

In 1970 the population of the United States was 203 million. Ten years later, in 1980, the population of the United States was 2

andrezito [222]

Answer:

The exponential function for the US population is:

$y = 203\cdot e^{0.0107\cdot t}$

Step-by-step explanation:

Let be supposed that US population can be modelled by means of the following exponential function:

$y = A \cdot e^{B\cdot t}$

Where:

$t$ - Time, measured in years. Where t = 0 for 1970.

$A$ - Initial population, in millions inhabitants.

$B$ - Exponential rate constant, in years.

$y$ - Population, in millions inhabitants.

Each constant is found hereafter:

$203 = A \cdot e^{B\cdot 0}$

$203 = A \cdot 1$

$A = 203$

$226 = 203\cdot e^{B\cdot 10}$

$\frac{226}{203} = e^{10\cdot B}$

$10\cdot B = \ln \frac{226}{203}$

$B = \frac{1}{10}\cdot \ln \frac{226}{203}$

$B = 0.0107$

The exponential function for the US population is:

$y = 203\cdot e^{0.0107\cdot t}$

4 0

2 years ago

A score that is 6 points below the mean corresponds to a z-score of z = 22.00. What is the population standard deviation?

pochemuha

Answer:

<h2>Standard deviation is a measure of how spread out of numbers are:</h2>

Step-by-step explanation:

a score that is 6 points below the mean corresponds to a z score of z= 22 than the population standard deviation will be

----

z = (distance from mean)/(standard deviation)

-----

22 = 6/s

s = 6/22

s=0.272

The population standard deviation deviation is 0.272

4 0

2 years ago

The organizers of a fair projected a 25 percent increase in attendance this year over that of last year, but attendance this yea

Gnom [1K]

Answer: 64 %

Step-by-step explanation:

Assume attendance last year to be equal to "x"

- An increase in percentage sees us add the percentage amount to 100.

- A decrease in percentage sees us subtract the percentage amount from 100.

Projected attendance = ((100+25)/100) * x = 1.25x

Actual attendance = ((100-20)/100) * x = 0.80x

Hence ratio of a actual to projected attendance = 0.80x/1.25x = 0.64

Convert into percentage = 0.64 * 100 = 64 %

5 0

2 years ago