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2 years ago

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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2 years ago

Read 2 more answers

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 $p(t)$

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

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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2 years ago

The Florida Everglades welcomes about 2x10 to the third power visitors per day. Based on this, about how many visitors come to t

Harrizon [31]

2,000 is the correct answer I am sure of it

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2 years ago

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:

- One tin of 500 mL blue paint costs $11.50.
-Jason needs 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, how much will it cost 4000 mL?

500 mL-----$11.50
4000 mL---x

x=(4000 mL)($11.50)/500 mL
x=$92.00

How much will it cost Jason to paint this bedroom?

The answer is: $92.00

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2 years ago