1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
seraphim [82]
3 years ago
5

Why is -0.45, 5/12, 0, 247 rational or an irrational number.

Mathematics
1 answer:
Marta_Voda [28]3 years ago
6 0
<h3>Answer:</h3>

All are rational.

<h3>Step-by-step explanation:</h3>

Any number you can write exactly and completely, or any repeating decimal is a rational number. Any number that can only be written exactly using a symbol, such as π or √2, is an irrational number. Something like √6.25 is rational, because it can be written exactly as 2.5, without the symbol.

The idea of "rational" means the number can be expressed as the ratio of two integers. Any integer can be expressed as the ratio of itself and 1.

All of your numbers can be expressed as the ratio of integers:

... -0.45 = -45/100 . . . . any terminating decimal can be expressed as a ratio of integers by making use of the place value multipliers

... 5/12 . . . . is the ratio of integers

... 0 = 0/1

... 247 = 247/1

You might be interested in
What are the roots of the polynomial equation? x² + 7x + 12 = 0 Enter your answers in the boxes. x1= x2=
oksian1 [2.3K]
The equation factors as
.. (x +3)(x +4) = 0
By the zero-product rule, the roots are
.. x1 = -4
.. x2 = -3

3 0
4 years ago
Read 2 more answers
You want to order carpet for an area in your house. The room measures 12 feet by 10 feet. The carpet is sold in square yards. Ho
FromTheMoon [43]

Answer:

yards of carpet you need: 4*10/3=40/3=13.3333 yd^2

Step-by-step explanation:

convert feet to yard:

1 yard=3 feet so

12 feet=4 yards

10 feet=10/3 yard=3.33333 yard

yards of carpet you need: 4*10/3=40/3=13.3333 yd^2

3 0
3 years ago
Help plss.............
Svet_ta [14]

Answer:

The total cost would be 29.15$

Step-by-step explanation:

multiply 27.50 by 0.06 to get 1.65. Then add 27.50 and 1.65, to get 29.15

4 0
3 years ago
In previous​ tests, baseballs were dropped 24 feet onto a concrete​ surface, and they bounced an average of 92.82 inches. In a t
goblinko [34]

Answer:

There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are​ different

Step-by-step explanation:

Given that in previous​ tests, baseballs were dropped 24 feet onto a concrete​ surface, and they bounced an average of 92.82 inches

But new balls showed mean of 92.6 inches with s = 1.72 inches

Sample size = 23

Since sample size is less than 30 and population std deviation is not know we use t test

H_0: \bar x = 92.82\\H_a: \bar x \neq 92.82

(Two tailed test at 5% significance level)

Mean difference = 92.6-92.82=-1.22

Std error of sample mean = s/sqrt n = \frac{1.72}{\sqrt{23} } \\=0.3586

Test statistic t = mean diff/std error = -3.402

df = 23-1 =22

p value = 0.002559

since p value <5% we reject H0

There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are​ different

3 0
3 years ago
Does this graph represent a function? Why or why not?
dlinn [17]
The answer is 100 percent B
8 0
2 years ago
Other questions:
  • Type 3xxyyy using exponents.
    14·1 answer
  • PLZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPPPPP ASAPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP WILLLLLLLLLLLLLLLL GIVEEEEEEEEEEEEEEE BRAINLES
    6·2 answers
  • How many points of intersection are there between line A and line B if they contain the points listed?
    11·2 answers
  • What is 2÷5×36·45÷76
    14·2 answers
  • What value of x is line a parallel to line b?
    8·1 answer
  • Choose a college student at random. Decide whether each of the following is a discrete or continuous random variable:
    11·1 answer
  • Select all the statements that are true about JKL and LMN.
    11·1 answer
  • I need help with this
    11·1 answer
  • The ratio of boys to girls in the freshman class is 2 : 3. If there are 120 boys in the class, how many are girls? *
    14·1 answer
  • Im normally good at alg ish but im confused
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!