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4 years ago

Help pleasse i’m taking a teat

Mathematics

1 answer:

Novay_Z [31]4 years ago

6 0

Answer:

$3 \frac{1}{4} \div \frac{3}{4}$

Step-by-step explanation:

3 1/4 is the total.

It is divided into sections(squares) of 3/4.

Therefore it is 3 1/4 ÷ 3/4

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7/8 sqare foot in 1/4 hour

babymother [125]

Answer:

2 1/2

Step-by-step explanation:

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3 years ago

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Ayden is planning a trip to Europe. Her plane ticket costs $5000 and she has budgeted $60 per day for food and expenses. Her tot

Korvikt [17]

Answer:

36.66 recurring

Step-by-step explanation:

5000+5000= 10,000 for the total plane tickets cost (to Europe, and back to home)

so 12,200-10,000= $2,200

2,200/60 = 36.6666667 days

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3 years ago

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If you have $10, and your money

Aleksandr [31]

Answer:

200,000,000 thats ur answer

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3 years ago

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Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below

Kay [80]

Answer:

Due to the higher z-score, Cade should be offered the job.

Step-by-step explanation:

Z-score:

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.

If the company has only one position to fill and prefers to fill it with the applicant who performed best on the aptitude test, which of the applicants should be offered the job?

Whoever had the higher z-score.

Reyna:

Reyna got a score of 75.3; this version has a mean of 69.3 and a standard deviation of 12.

This means that $X = 75.3, \mu = 69.3, \sigma = 12$

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

$Z = \frac{75.3 - 69.3}{12}$

$Z = 0.5$

Kaitlyn:

Kaitlyn got a score of 228.4; this version has a mean of 206 and a standard deviation of 28.

This means that $X = 228.4, \mu = 206, \sigma = 28$

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

$Z = \frac{228.4 - 206}{28}$

$Z = 0.8$

Cade:

Cade got a score of 7.88; this version has a mean of 7.2 and a standard deviation of 0.4. This means that $X = 7.88, \mu = 7.2, \sigma = 0.4$

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

$Z = \frac{7.88 - 7.2}{0.4}$

$Z = 1.7$

Due to the higher z-score, Cade should be offered the job.

7 0

3 years ago

Find the probability of rolling a sum of 10 or a sum that is an odd number when two number cubes are rolled.

Nitella [24]

Answer:

7/12 chance

Step-by-step explanation:

(1 2 3 4 5 6)

All the possibilities:

(1, 1) (2, 1) (3, 1) (4, 1) (5, 1) (6, 1)

(1, 2) (2, 2) (3, 2) (4, 2) (5, 2) (6, 2)

(1, 3) (2, 3) (3, 3) (4, 3) (5, 3) (6, 3)

(1, 4) (2, 4) (3, 4) (4, 4) (5, 4) (6, 4)

(1, 5) (2, 5) (3, 5) (4, 5) (5, 5) (6, 5)

(1, 6) (2, 6) (3, 6) (4, 6) (5, 6) (6, 6)

There are 18 odd sums.

(1, 1) (2, 1) (3, 1) (4, 1) (5, 1) (6, 1)

(1, 2) (2, 2) (3, 2) (4, 2) (5, 2) (6, 2)

(1, 3) (2, 3) (3, 3) (4, 3) (5, 3) (6, 3)

(1, 4) (2, 4) (3, 4) (4, 4) (5, 4) (6, 4)

(1, 5) (2, 5) (3, 5) (4, 5) (5, 5) (6, 5)

(1, 6) (2, 6) (3, 6) (4, 6) (5, 6) (6, 6)

There are 3 possibilities whose sums add up to 10.

Since there are 36 total possibilities and 21 numbers that fit the rule of having an odd sum or a sum of 10. There is a 21/36 chance or simplified, 7/12 chance.

6 0

4 years ago