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Aleonysh [2.5K]
3 years ago
14

Which expressions are perfect cubes? -1,000 0 2721 343p O n30 ebo... -1

Mathematics
1 answer:
Vikki [24]3 years ago
4 0

Answer: -1000, 27r^21, g^3h^30, and -1

Step-by-step explanation:

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The cost of Ms. Clark's restaurant meal is $25.50.
lapo4ka [179]

Answer: The correct answer is B.

Step-by-step explanation: We are given the cost of restaurant meal of M. Clark is $25.50.

and she has given 20% of the meal's cost as a tip to the waiter.

Step 1: Calculating the amount of tip paid

\text{amount of tip}=\frac{20}{100}\times 25.50

Total tip paid = $5.1

Step 2: To find the total amount, we add the cost of the meal and the tip paid

Total amount = Cost of the meal + Tip paid

Total amount = $25.50 + $5.10

Total amount paid by Ms. Clark = $30.6

4 0
3 years ago
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If (x+3)÷ 3 = 9 what is x
Sveta_85 [38]

Answer:

x = 24

Step-by-step explanation:

9*3 = 27

27 - 3 = 24

x = 24

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3 years ago
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An airplane is flying due west at a velocity of 100 m/s. What is the magnitude of the airplanes resultant velocity?
Lelechka [254]

Answer:

100.12 m/s

Step-by-step explanation:

8 0
3 years ago
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If the Math Olympiad Club consists of 11 students, how many different teams of 3 students can be formed for competitions?
vivado [14]

Answer:

165 different teams of 3 students can be formed for competitions

Step-by-step explanation:

Combinations of m elements taken from n in n (m≥n) are called all possible groupings that can be made with the m elements so that:

  • Not all items fit
  • No matter the order
  • Elements are not repeated

That is, a combination is an arrangement of elements where the place or position they occupy within the arrangement does not matter. In a combination it is interesting to form groups and their content.

To calculate the number of combinations, the following expression is applied:

C=\frac{m!}{n!*(m-n)!}

It indicates the combinations of m objects taken from among n objects, where the term "n!" is called "factorial of n" and is the multiplication of all the numbers that go from "n" to 1.

In this case:

  • n: 3
  • m: 11

Replacing:

C=\frac{11!}{3!*(11-3)!}

Solving:

C=\frac{11!}{3!*8!}

being:

  • 3!=3*2*1=6
  • 8!=8*7*6*5*4*3*2*1=40,320
  • 11!=39,916,800

So:

C=\frac{39,916,800}{6*40,320}

C= 165

<u><em>165 different teams of 3 students can be formed for competitions</em></u>

3 0
3 years ago
um barco avista a torre de um farol segundo um ângulo de 6 com o novel do mar. sabendo quea altura do farol é de 42m, determinar
zalisa [80]
No speak English sorry about that.l.
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