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denpristay [2]
2 years ago
5

An Airbus has 1 first class section, 1 business-class section and 4 economy-class sections. The first class section has 14 seats

. 5/7 are being used. The business-class section has 64 seats. 5/16 are being used. Each economy-class section has 108. 5/9 in each section are being usd. Are more than half seats on the plane being used? Yes Or No Show your working.
HELP!!!!!!!
Mathematics
1 answer:
serious [3.7K]2 years ago
6 0

Answer:

first class section has  14 Seats

Seat used = (5/7) * 14 = 10 Seats

Business class Section has 64 Seats

Seats used = (5/16) * 64 = 20 Seats

Economy class Section has 4 * 108 = 432 Seats

Seats used = (5/9) * 432 = 240 Seats

Total Seats = 14 + 64 + 432 = 510

Total Seats Used = 10 + 20 + 240 = 270

270/510  = 270 ( 2 * 255)   >  1/2

Yes , more than half of the seats being used

Step-by-step explanation:

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Oksana_A [137]

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Step-by-step explanation:

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Have a Great Day!!

4 0
2 years ago
Evaluate \frac{7a+b}{b+c} if a=2,b=6,c=4
bezimeni [28]

Answer:

30

Step-by-step explanation:

1. 7 times 2 is 14 + 6 is 20

2. Add 6 + 4 is 10

2. Add 20 and 10, u get 30

Hope this helps, Good Luck!

8 0
3 years ago
Read 2 more answers
Which of the following is a solution to sin x/2 = sqrt3/2 ?
Vera_Pavlovna [14]

Answer:

A. 60 degrees

Step-by-step explanation:

Solution to sin(x/2)=(\sqrt{3}/2)

By looking at this equation, I can identify that the answer must be within the first quadrant since the numerator and denominator are both positive.

Since it is in the first quadrant, the range of the value of the answer must be between 0 degrees less than or equal to x less than or equal to 90 degrees.

I can also identify that this is a 30, 60, 90 degree triangle because it has a \sqrt{3} and 2 as the numerator and denominator; in this case this tells us that we are dealing with a 30, 60, 90 degree triangle because that is the only triangle with those 2 respective sides.

Once identifying those two pieces of information, we can then determine the answer.

Since sin is equal Opposite/Hypotenuse, we can then substitute the sides of the triangle (\sqrt{3}, 2) to find the angle (unknown).

So the equation would look like this,

Sinx/2=\sqrt{3}/2 (\sqrt{3} representing the opposite side of the angle; 2 representing the Hypotenuse of the triangle)

We can then conclude that 60 degrees is the unknown angle, due to the nature of a 30 60 90 degree triangle.

*Use the attachment for reference

Therefore, the answer, 60 degrees, is a solution to the equation "sin(x/2)=(\sqrt{3}/2)"

3 0
3 years ago
What value of x can you substitute into each of these expressions to give you the same answer?
user100 [1]

Answer:

x = 4

4 + 12 = 16 \\ 6 \times 4 - 8 = 16 \\ 4 \times 4 = 16

4 0
2 years ago
Read 2 more answers
What is 2 x 9(-6) = 18(-6)?
ser-zykov [4K]
2x9= 18
18×-6= -108
Your answer is 108.
3 0
2 years ago
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