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Pavel [41]
2 years ago
14

A cube has an edge length of 21 cm. What is the volume?

Mathematics
2 answers:
77julia77 [94]2 years ago
7 0

Answer:

3x21 cm3

Step-by-step explanation:

JulijaS [17]2 years ago
5 0

Answer:

Step-by-step explanation:

Volume = 21^3 cm^3.

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An airline charges the following baggage fees: $25 for the first bag and $35 for the second. Suppose 51% of passengers have no c
Orlov [11]

Answer:

The average revenue per passenger is about $13.85

μ = $13.85

The corresponding standard deviation is $14.51

σ = $14.51

The airline should expect revenue of $1,662 with a standard deviation of $14.51 for a flight of 120 passengers.

Expected revenue = $1,662 ± 14.51

Step-by-step explanation:

An airline charges the following baggage fees:

$25 for the first bag and $35 for the second

Suppose 51% of passengers have no checked luggage,

P(0) = 0.51

33% have one piece of checked luggage and 16% have two pieces.

P(1) = 0.33

P(2) = 0.16

a. Build a probability model, compute the average revenue per passenger, and compute the corresponding standard deviation.

The average revenue per passenger is given by

μ = 0×P(0) + 25×P(1) + 35×P(2)

μ = 0×0.51 + 25×0.33 + 35×0.16

μ = 0 + 8.25 + 5.6

μ = $13.85

Therefore, the average revenue per passenger is about $13.85

The corresponding standard deviation is given by

σ = √σ²

Where σ² is the variance and is given by

σ² = (0 - 13.85)²×0.51 + (25 - 13.85)²×0.33 + (35 - 13.85)²×0.16

σ² = 97.83 + 41.03 + 71.57

σ² = 210.43

So,

σ = √210.43

σ = $14.51

Therefore, the corresponding standard deviation is $14.51

b. About how much revenue should the airline expect for a flight of 120 passengers? With what standard deviation?

For 120 passengers,

Expected revenue = 120×$13.85

Expected revenue = $1,662 ± 14.51

Therefore, the airline should expect revenue of $1,662 with a standard deviation of $14.51 for a flight of 120 passengers.

6 0
2 years ago
Please answer this correctly
attashe74 [19]
It is 0.2 x 0.4
The green part is 20 squares and the yellow part is 40 squares. The intersection has 8 squares which means the answer is 0.08
8 0
3 years ago
Use substitution to solve the linear system of equations. <br> y = -3x + 1 <br> y = 2x - 4
gayaneshka [121]
(1,-2) will be your answer
8 0
3 years ago
Read 2 more answers
How many like terms are in the expression? 14x- 14y+7- X + Z + 2x <br>0 <br>2 <br>3 <br>5​
Alex787 [66]

Answer:

Terms- each of the quantities in a ratio, series, or mathematical expression.

14x

-14y

7

-x

z

2x

There are 3<u> terms</u> in this expression.

I hope this helped!

Step-by-step explanation:Brainliest answer is always appreciated!

8 0
3 years ago
Read 2 more answers
Use long division or synthetic division to find the quotient of 2x^3+x^2+1 / x+1
gogolik [260]

Answer:

The quotient is 2x^2 - x + 1.

Step-by-step explanation:

If x + 1 is the divisor in long division, then -1 is the divisor in synthetic division:

-1   /   2    1    0    1

              -2    1    -1

    ----------------------

       2      -1     1    0

The quotient is 2x^2 - x + 1.  The coefficients were obtained through synthetic division.

7 0
2 years ago
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