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3 years ago

A _____ is a list of things where each thing appears only once and Order matters

Mathematics

1 answer:

Schach [20]3 years ago

3 0

Answer: Permutation

Permutation is a way, in which a set or number of things can be ordered or arranged. It is a listing where order matters and each thing in the list of things appears only once.

In Mathematics, permutation is the action of changing the arrangement of a set of items. .It is also called an "arrangement number" or "order

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The 30 minute lunch period for Grade2 starts at quarter past twelve. At what time does it end?

Tom [10]

12:45. Quarter past twelve is 15 minutes and 15 + 30 = 45. Hence, you get 12:45 as your time.

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3 years ago

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Your cell phone plan cost $24.99 per month plus $0.12 for each text message you send or receive. you have a most $30 to spend on

ioda

Answer:

The maximum number of text messages you can send per month would be 41.

Step-by-step explanation:

1. First, you want to create an inequality from the word problem. You know that $24.99 is a constant, so we won't put any variables next to it. You also know that each text message is $0.12, so that would need a variable since it can change each month. You also know that you can spend $30 maximum each month, so that goes on the other side of the inequality. Your inequality will look like this: 0.12x+24.99≤30 (x is the number of text messages).

2. Second, you want to solve for x. To do this, subtract 24.99 from each side. After this, the equation is 0.12x≤5.01

3. Now, divide each side by 0.12. Now your inequality is x≤41.75. This represents how many text messages you can send per month without going over 30.

4. Finally, you have to realize that is impossible to send exactly 41.75 text messages. So, you have to round down to 41 to get an even number of text messages, and that's your answer!

Hope this helps! Feel free to ask any questions :)

3 0

3 years ago

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7. A boy on ice skates has a momentum of 200 kg m/s to the left at a velocity of 20

tankabanditka [31]

Answer: 10 m/s

Step-by-step explanation:

Given

Momentum of boy $P=200\ kg.m/s$

Mass of boy is $m=20\ kg$

Momentum is the product of mass and velocity

$P=mv$

Substitute value

$\Rightarrow 200=20\times v\\\Rightarrow v=10\ m/s$

Thus, the boy is moving with a velocity of 10 m/s

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3 years ago

3n - 7 > n + 1 or 4n - 5 < 3n - 3

hodyreva [135]

Answer:

n > 4

Step-by-step explanation:

3n - 7 > n + 1

Move variable to the left side and change its sign

3n - n - 7 > 1

...

3n - 7 > n + 1

Move constant to the right side and change its sign

3n - n > 1 + 7

...

3n - n > 1 + 7

Collect the like terms

2n < 1 + 7

...

3n - n > 1 + 7

Add the numbers

2n < 8

Divide both sides of the inequality by 2

Solution:

n > 4  Answer:

n < 2

Step-by-step explanation:

4n - 5 < 3n - 3

Move variable to the left side and change its sign

4n - 3n - 5 < - 3

...

4n - 5 < 3n -3

Move constant to the right side and change its sign

4n - 3n < - 3 + 5

...

4n - 3n < - 3 + 5

Collect the like terms

n < - 3 + 5

...

4n - 3n < - 3 + 5

Calculate the sum

n < 2

...

Solution:

n < 2

8 0

3 years ago

*Absurd answers will be reported* Can the fraction 12/30 be reduced/simplified? If it can, what can it be reduced by?

Fynjy0 [20]

Answer:

divided by 3 12/30 = 4/10 = 2/5

Step-by-step explanation:

4 0

3 years ago

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