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Ilia_Sergeevich [38]
2 years ago
7

Is 5/21 rational or irrational number ?

Mathematics
1 answer:
ZanzabumX [31]2 years ago
6 0

Answer:

rational

Step-by-step explanation:

irrational numbers can not be expressed as a fraction

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NEED HELP ON NUMBER 13 AND 14
Kazeer [188]

Answer:

Question 13: For age groups y=1 and y=1.3 response is 8 microseconds.

Question 14: The club was making a loss between 11.28 and 4.88 years.

Step-by-step explanation:

Question 13:

The age group y for which the response rate R is 8 microseconds  is given by the solution of the equation

8=y^4 +2y^3 - 4y^2 -5y +14.

We graph this equation and find the solutions to be

y=1;   y=1.302;     y=-2;    y=-2.302.

Since only positive solutions for y are valid in the real world we take only those.

Thus only for age groups y=1 and y=1.3 the response is 8 microseconds.

Question 14:

The footbal club is making a loss when p(t)

Or

t^3 -14t^2 +20t +120

We graph this inequality and find the solutions to be

t and 4.88

Since in the real world only positive values for t are valid, we take the the second solution to be true.

Thus the club was making a loss in years 4.88

5 0
2 years ago
300-297+294-291+288-285+...+6-3
vladimir2022 [97]
300 - 297 = 3

294 - 291 = 3

288 - 285 = 3

So, that is a sequence of sums of number 3: 3 + 3 + 3 + .... + 3

How may times will the number 3 be added?

Note that 300 is reduced in 6 units each time => 300 / 6 = 50 => 3 will be added 50 times.

=> 50 * 3 = 150

Answer: 150
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The Florida Everglades welcomes about 2x10 to the third power visitors per day. Based on this, about how many visitors come to t
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2,000 is the correct answer I am sure of it
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Jason is decorating his house and decides to paint one of the bedrooms blue. One tin of 500mL blue paint costs $11.50. To finish
adell [148]
1.You have that:
<span> 
 - One tin of 500 mL blue paint costs $11.50.
 -Jason needs </span><span>4 L of blue paint.
 
 2. First, you must convert 4 L to mL, as below:
 
 1 L----1000 mL
 4 L----x
 
 x=4x1000/1
 x=4000 mL
 
 3. If 500 mL costs $11.50, h</span><span>ow much will it cost 4000 mL?
</span><span> 
 500 mL-----$11.50
 4000 mL---x
 
 x=(4000 mL)($11.50)/500 mL
 x=$92.00
</span><span> 
 How much will it cost Jason to paint this bedroom?
 
 The answer is: $92.00</span><span> 
</span>
8 0
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