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Pani-rosa [81]
3 years ago
14

Is -13 over -12 rational or irrational?

Mathematics
1 answer:
otez555 [7]3 years ago
6 0

Answer:

Step-by-step explanation:

-13/-12 = 1.0833......

The number is non terminating and repeating. So, it is rational number

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3 years ago
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A professor wants to know how undergraduate students at X University feel about food services on campus, in general. She obtains
hammer [34]

Answer:

15000

Step-by-step explanation:

Given that a professor wants to know how undergraduate students at X University feel about food services on campus, in general. She obtains a list of email addresses of all 15,000 registered undergraduates from the registrar’s office and mails a questionnaire to 300 students selected at random.

Only 150 questionnaires are returned.

So the sample size changed to 150. But population is the number of registered undergraduates which do not change.

Population size = 15000

8 0
2 years ago
Factor the expression 2x4y – 18x2y3 completely.
Annette [7]

Answer:

B. 2x2y(x – 3y)(x + 3y)

Step-by-step explanation:

2 {x}^{4} y - 18 {x}^{2}  {y}^{3}  \\  = 2 {x}^{2} y( {x}^{2}  - 9 {y}^{2} ) \\  = 2 {x}^{2} y \{ {x}^{2}  -  {(3y)}^{2} \} \\  \purple {\boxed{ \bold{ = 2 {x}^{2}  y(x - 3y)(x + 3y)}}}

5 0
3 years ago
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Reca was approved for a credit card that charges an apr of 26% what is her monthly interest rate?
Lesechka [4]

Answer:

i_m=0.01945 or 1.945%

Step-by-step explanation:

Term annual percentage rate(APR) is the annual interest rate charged ona financial year for a duration of one year. APR can be converted to weekly, monthly, daily or even semi-annual rates using the below formula.

Effective rate for period = (1 + annual rate)(1 / n of periods) – 1

Rate is given as:

i_m=(1+i)^\frac{1}{12}-1\\i_m=(1+0.26)^\frac{1}{12}-1\\i_m=0.01945

7 0
2 years ago
The book fair sells 185 books and 58 posters how many more books than posters did they sell
PtichkaEL [24]

Answer:

127 more posters than books.

Step-by-step explanation:

185-58=127

3 0
3 years ago
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