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bija089 [108]
3 years ago
8

Find a rational number that is between 5.2 and 5.5. explain why it is rational.

Mathematics
2 answers:
dexar [7]3 years ago
8 0

Answer:

Step-by-step explanation:

rational numbers can be written in form a/b where b≠0

5.2 and 5.5

52/10 and 55/10

so some rational numbers could be

53/10, 54/10

irrational numbers  most likely the square root numbers

square them

5.2^2=27.04

5.5^2=30.25

5.2<?<5.5

square everybody

27.04<?²<30.25

so pick a number between 27.04 and 30.25

29 or 30 are 2 numbers

I'll pick 29

?²= 29

square root

?=√29

the irrational number can be √29

it is 5.39 to the hundredth

MaRussiya [10]3 years ago
7 0

Answer:

5.3

Step-by-step explanation:

A rational number is a number that can be written as the quotient of two integers.

5.2 and 5.5 are both rational since they can be written as quotients of integers as shown below.

5.2 = 52/10

5.5 = 55/10

5.3 is a number between 5.2 and 5.5, and since 5.3 can be written as 53/10, it is rational.

Answer: 5.3

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storchak [24]

Brianna listen 60 songs on Saturday !

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

Here we have , On Saturday, 45% of the music Brianna listened to was country songs. She listened  to 27 country songs on Saturday. How many songs did Brianna listen to on  Saturday .Let's find out:

Let Brianna listens x songs ! So , 45% of x songs is 27 songs , i.e.  On Saturday, 45% of the music Brianna listened to was country songs. She listened  to 27 country songs on Saturday as :

⇒ \frac{45(x)}{100} =27

⇒ \frac{45(x)}{100}(\frac{100}{45}) =27(\frac{100}{45})

⇒ x =27(\frac{100}{45})

⇒ x =\frac{2700}{45}

⇒ x =60

Therefore , Brianna listen 60 songs on Saturday !

8 0
3 years ago
dave and his sister picked out two pumpkin at the pumpkin patch. the pumpkins cost $0.47 per pound. david's pumpkin weighed 13.2
pickupchik [31]
David's pumpkin cost $8.22
His sister's pumpkin cost $4.98
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6 0
3 years ago
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Help me plz 8th grade math need answers quick
mixer [17]

Answer:

25. Not a solution

26. Yes a solution

27. y= 2/3 x

28. y=3x+16

Step-by-step explanation:

25. The solution to a linear equation is the point (x,y). To find if an (x,y) is a solution, substitute it into the equation and see if it works.

y=4x-4 and (8,3)

3=4(8)-4

3=32-4

3=28

False

Not a solution.

26. Repeat 25 to solve 26 with y=5x-5 and (0,-5)

y=5x-5 and (0,-5)

-5=5(0)-5

-5=0-5

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True

Yes a solution.

27. This line crosses through the origin is proportional and therefore has the form y=mx. It also has a gentle slant meaning that is less than 1/2 and goes in a positive direction. This means it is y=2/3 x.

28. Use inverse operations to rearrange the equation.

y-3x=16

y=16+3x

y=3x+16

8 0
3 years ago
Solve x2 = 12x – 15 by completing the square. Which is the solution set of the equation? Solve x2 = 12x – 15 by completing the s
Svetlanka [38]

Answer: 6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}

Step-by-step explanation:

Given

Quadratic equation is

x^2-12x+15=0

Solving by completing the square method

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The solution set of the equation is 6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}

6 0
3 years ago
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Which expression best estimates Negative 18 and one-fourth divided by 2 and two-thirds?
Mars2501 [29]

Answer:

-18/3

Step-by-step explanation:

5 0
3 years ago
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