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andrey2020 [161]
3 years ago
12

Determine whether each number is rational or irrational. Rational Irrational

Mathematics
2 answers:
kvv77 [185]3 years ago
8 0

Answer:

  • Irrational
  • Rational
  • Rational
  • Rational
  • Irrational
Vlad1618 [11]3 years ago
4 0

Answer:

  1. irrational
  2. rational
  3. irrational
  4. rational
  5. irrational

Step-by-step explanation:

Rational numbers: Include all the integers, each of which can be written as a quotient with the integer as the numerator and 1 as the denominator.

Irrational numbers: Any real number that cannot be expressed as the quotient of two integers.

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Natalie walked 3/5 mile in 1/2 hour. How many miles did she walk per hour
Marizza181 [45]

Answer:

She walked 1  1/5 miles per hour.

Step-by-step explanation:

5 0
3 years ago
Assume the sample below is a perfectly random sample of students at a school. How much greater is the mean of the
igor_vitrenko [27]

Answer:

0.75

Step-by-step explanation:

The table is not well presented (See Attachment)

There are at least two approaches to this question

Method 1:  

Steps

1. Calculate the mean of reported heights

Mean of reported heights = (61+68+57.5+48.5+75+65+80+68+69+63)/10

Mean of reported heights = 655/10

Mean of reported heights = 65.5

2. Calculate the mean of measured heights

Mean of measured heights = (62 + 68 + 56.5 + 47 + 72 + 65 + 78 + 67 + 69.5 + 62.5)/10

Mean of measured heights = 647.5/10

Mean of measured heights = 64.75

3. Get their difference

Difference = Mean of reported heights - Mean of measured heights

Difference = 65.5 - 64.75

Difference = 0,75

Method 2: Calculate the mean of their difference

Mean of difference = Sum of difference / Number of observations

Mean of difference = (-1 + 0 + 1 + 1.5 + 3 + 0 + 2 + 1 – 0.5 + 0.5)/10

Mean of difference = 7.5/10

Mean of difference = 0.75

Note that in both cases, the result is 0,75.

Hence, the reported heights at the school is 0.75 greater than the actual measured height

3 0
2 years ago
Read 2 more answers
To get an A in a course, you must have an average of at least 90% on four tests worth 100 points each. Your scores so far are 85
kondaur [170]

Answer:

A score of 117 is needed, which Is not possible since the test is over 100.

Step-by-step explanation:

The other 3 scores are 85, 94,84 . Let's x be the 4th score he must score.

Therefore ( 85 + 94 + 84 + X)/4 =95

Then 263+X /4 =95

Cross mutiplying 4*95=263+X

Therefore X= 380-263

X= 117 which is not possible since the test score is over 100.

6 0
2 years ago
-11-(-10) what is the value
sertanlavr [38]

The answer is -1 , because when you add a negative number to a positive number the negative number will subtract , and vise versa.  

7 0
2 years ago
A regular pentagon with a perimeter of 21 inches is dilated by a scale factor of
levacccp [35]
<h3>Answer: 35 inches</h3>

Each side of the pentagon is multiplied by 5/3 to get the length of each new side, so the perimeter is multiplied by 5/3 to get the new perimeter.

New perimeter = (scale factor)*(old perimeter)

New perimeter = (5/3)*(old perimeter)

New Perimeter = (5/3)*(21)

New Perimeter = (5/3)*(21/1)

New Perimeter = (5*21)/(3*1)

New Perimeter = 105/3

New Perimeter = 35 inches

5 0
3 years ago
Read 2 more answers
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