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zimovet [89]
3 years ago
5

The model of a circular garden is 8 inches in diameter. The actual garden will be 20 feet in diameter. Find the scale of the mod

el.
Mathematics
1 answer:
pishuonlain [190]3 years ago
7 0

Answer:

Step-by-step explanation:

8:20 = 2:5

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Out of 120 high school boys and 80 high school girls, 45 tried out for track. Of those 45, 12 were girls.
zhannawk [14.2K]
<span>So there are 33 boys who tried out for track. And this is 27.5 % of the total boys. And there 15% of the girls who tried out for the track. And in total 22.5 % of the total population tried out for track</span>
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3 years ago
What is the z-score of a newborn who weighs 4,000 g?.
vagabundo [1.1K]

The z-score of the considered newborn having 4,000 g weight is \dfrac{4000 - \mu}{\sigma}

<h3>How to get the z scores?</h3>

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

X \sim N(\mu, \sigma)

(X is following normal distribution with mean \mu and standard deviation  \sigma)

then it can be converted to standard normal distribution as

Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

P(Z \leq z) = P(Z < z) )

Also, know that if we look for Z = z in z tables, the p value we get is

P(Z \leq z) = \rm p \: value

For the considered case, the statement in the problem is missing the mean weight of the newborn and standard deviation of the data set of weights of newborn.

Thus, for them, we can consider variables in place of their actual values.

Let we have:

  • X = weights of newborns for some considered system (in grams)
  • \mu = mean weight of newborns (in grams)
  • \sigma = standard deviation of the data set of weights of newborns

Then, the z-score for X = 4000 is

z = \dfrac{x - \mu}{\sigma} = \dfrac{4000 - \mu}{\sigma}

Thus, the z-score of the considered newborn having 4,000 g weight is \dfrac{4000 - \mu}{\sigma}

Learn more about z-scores here:

brainly.com/question/13299273

3 0
2 years ago
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kompoz [17]
Addition is commutative.
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Division is not commutative.
3 / 4 is not = 4 / 3.
4 0
3 years ago
Choose all options that apply. Which of the following are equal to 20%? | a) .25 b) 1/5 Oc) 1/10 d) .20
oee [108]

Answer:

b and d

Step-by-step explanation:

b because 1/5=20 out 100% and d because 20. and go to the left 2 spaces which I feel like you have 2 answers

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3 years ago
Read 2 more answers
What equation represents the proportional relationship displayed in the table? ​
oksian1 [2.3K]

Answer:

x=6y

Step-by-step explanation:

For each x the y would go up 6.

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