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2 years ago

3. Which of these rational numbers represents a terminating decimal?

Mathematics

2 answers:

MrRissso [65]2 years ago

6 0

Answer:

Step-by-step explanation:

convert all the numbers and see which one represents a terminating decimal

alina1380 [7]2 years ago

5 0

7/28 is a terminating decimal

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How do you do this problem???!!

riadik2000 [5.3K]

Answer:

whats the problem bc i cant see it

Step-by-step explanation:

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3 years ago

When constructing inscribed polygons and parallel lines, how are the steps different?

ddd [48]

- When constructing inscribed polygons and parallel lines, the steps are different as a compass is used to copy an angle. A compass is an .

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4 years ago

A large sample of tires from cabs driven within a city have an average tire tread depth of 0.25cm at the end of the winter. If t

frutty [35]

Answer:

0% probability cab tires depths would be shallower than 0.25cm.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 2.2, \sigma = 0.33$

What is the probability cab tires depths would be shallower than 0.25cm.

This probability is the pvalue of Z when X = 0.25. So

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

$Z = \frac{0.25 - 2.2}{0.33}$

$Z = -5.9$

$Z = -5.9$ has a pvalue of 0.

0% probability cab tires depths would be shallower than 0.25cm.

7 0

3 years ago

The cost of admission to a popular music concert was 162 dollars for 12 children and 3 adults.The admission was 122 dollars for

pogonyaev

Answer: the cost of admission for each child is $10

the cost of admission for each adult is $14

Step-by-step explanation:

Let x represent the cost of admission for each child.

Let y represent the cost of admission for each adult.

The cost of admission to a popular music concert was 162 dollars for 12 children and 3 adults. This is expressed as

12x + 3y = 162- - - - - - - - - - - - -1

The admission was 122 dollars for 8 children and 3 adults in another music concert. This is expressed as

8x + 3y = 122- - - - - - - - - - - - -2

Subtracting equation 2 from equation 1, it becomes

4x = 40

x = 40/4

x = 10

Substituting x = 10 into equation 1, it becomes

12 × 10 + 3y = 162

120 + 3y = 162

3y = 162 - 120

3y = 42

y = 42/3

y = 14

7 0

3 years ago

Please solve this question

Vesnalui [34]

Hello,

$\boxed{P(X = k) =( {}^{n} _{k}) \times p {}^{k} \times (1 - p) {}^{n - k} }$

$P(X= k) = ( {}^{12} _{6}) \times 0.51 {}^{6} \times (1 - 0.51) {}^{12 - 6}$

We have :

$( {}^{n} _{k}) = \frac{n!}{k!(n - k)!}$

$( {}^{12} _{6}) = \frac{12!}{6!(12 - 6)!} = \frac{12!}{6!6!} = \frac{12 \times 11 \times 10 \times ... \times 1}{2(6 \times 5 \times 4 \times... \times 1) } = \frac{12 \times 11 \times 10 \times 9 \times 8 \times 7 }{6 \times 5 \times 4 \times 3 \times 2 \times 1} = 924$

$P(X = k) = 924 \times 0.51 {}^{6} \times 0.49 {}^{6} = 0.2250$

8 0

2 years ago