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Ghella [55]
3 years ago
3

Which numbers are rational numbers and irrational numbers and why

Mathematics
1 answer:
jasenka [17]3 years ago
5 0

Answer:

  rational: -3.786, 8/17, 8.23, 10.86731234, 0.75, √.49 = 0.7

  irrational: 3π, √11

Step-by-step explanation:

Any number that can <em>only</em> be represented <em>completely</em> using symbols, such as π or √, is an irrational number.

If the number can be expressed as the ratio of two integers, it is a rational number. Such numbers include proper and improper fractions, integers, any number you can write with a finite number of digits, and any repeating decimal, regardless of the length of the repeat.

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Arisa [49]
Hey there!

To figure out how much money each person has, we need to divide. 

4.44 ÷ 3 = 1.48

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5 0
3 years ago
Describe two different ways to write 7/3 as a mixed number.
Yuki888 [10]
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6 0
3 years ago
How many oz. of a metal containing 40%
RideAnS [48]

Answer:

3 oz

Step-by-step explanation:

Let x represent the number of oz. of the medal with 40% gold:

Set up an equation and solve for x:

0.4x + 7(0.9) = 0.75(x + 7)

0.4x + 6.3 = 0.75x + 5.25

6.3 = 0.35x + 5.25

1.05 = 0.35x

3 = x

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3 0
3 years ago
You flip a coin four times and then roll a fair six sided die four times. The coin lands heads up every time in the day shows an
exis [7]

Answer:

0.00390625

Step-by-step explanation:

For coins :

Number of rolls, trials, n = 4

P(heads) = 0.5

Using binomial probability formula :

P(x =x) : nCr * p^x q ;

P(obtaining exactly 4 heads) = 4C4 * 0.5^4 * 0.5^0 = 1 * 0. 0625 * 1 = 0.0625

P(even number from 4 coin tosses)

Even faces = (2,4,6)

Total faces = (1,2,3,4,5,6)

P(success) = 3/6 = 0.5

P(obtaining exactly 4 even) = 4C4 * 0.5^4 * 0.5^0 = 1 * 0. 0625 * 1 = 0.0625

Hence, obtaining 4 even outcomes and 4 heads = 0.0625 * 0.0625 =0.00390625

8 0
3 years ago
What is the value of x​
SCORPION-xisa [38]

Answer:

7

Step-by-step explanation:

8 0
3 years ago
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