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Anettt [7]
2 years ago
12

Seema is travelling to Guernsey. She travels a distance of 3,800 km by plane to London and then another 400 km to Guernsey. Both

planes fly at an average speed of 900 kmh-1.
What is her total flight time in hours and minutes, to the nearest minute?
Mathematics
1 answer:
slava [35]2 years ago
4 0

9514 1404 393

Answer:

  4 hours 40 minutes

Step-by-step explanation:

The appropriate relation is ...

  time = distance/speed

  time = (3800 km)/(900 km/h) +(400 km)/(900 km/h) = (38+4)/9 h

  = 14/3 h = 4 2/3 h

Seema's flight time is 4 hours 40 minutes.

__

2/3 of 60 minutes is 40 minutes

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1. Five more than three times a number is sixty- five.
nalin [4]
First equation
a. 3x+5=65
b.3x=60     x=20



7 0
3 years ago
In a​ company, ​95% of the workers are men. If 265 people work for the company who​ aren't men ​, how many workers are there in​
exis [7]

Answer:

5300 people

Step-by-step explanation:

265 = .05x

3 0
3 years ago
14. A rectangle has a width described by the expression (x2 + 2x – 15)/x and a length described by the expression
tensa zangetsu [6.8K]

Answer:

The answer to your question is Perimeter = [4x³ + 14x² + 50x - 150] / x(5 + x)

Step-by-step explanation:

Data

Width = (x² + 2x - 15)/x

Length = (3x² + 4x)/ (5 + x)

Process

1.- Write the formula for the perimeter of a rectangle

Perimeter = 2W + 2L

2.- Substitution

Perimeter = 2(x² + 2x - 15)/x + 2(3x² + 4x)/(5 + x)

3.- Simplification

Perimeter = (2x² + 4x - 30)/x + (6x² + 8x)/(5 + x)

4.- Sum the fractions

Least common factor = x(5 + x)

Perimeter = [(2x² + 4x - 30)(5 + x) + (x(6x² + 8x)] / x(5 + x)

-Simplification

Perimeter = [10x² + 20x - 150 - 2x³ - 4x² + 30x + 6x³ + 8x²] / x(5 + x)

Perimeter = [4x³ + 14x² + 50x - 150] / x(5 + x)

8 0
3 years ago
A lunch bill is $12 before tax. If the tax on the bill is 7.5% what is the total cost of the lunch including tax?
nikitadnepr [17]

Answer:

\boxed{ \bold{ \huge{\boxed{ \sf{ \: 12.9 \: \:  dollars}}}}}

Step-by-step explanation:

Given,

Cost without tax = $ 12

Tax percent = 7.5 %

Cost including tax = ?

<u>First</u><u>,</u><u> </u><u>finding </u><u>the</u><u> </u><u>tax</u><u> </u><u>amount</u><u> </u><u>:</u>

\sf{tax \: amount \:  =  \: 7.5 \: \% \: of \: 12}

⇒\sf{tax \: amount =  \frac{7.5}{100} \times 12}

⇒\sf{tax \: amount = 0.9} dollars

<u>Finding </u><u>the</u><u> </u><u>total</u><u> </u><u>cost</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>lunch</u><u> </u><u>including </u><u>tax</u><u> </u><u>:</u>

⇒\sf{total \: cost \:  =  \: 12 + 0.9}

⇒\sf{total \: cost \:  =  \: 12.9} dollars

Hope I helped!

Best regards ! :D

6 0
3 years ago
Read 2 more answers
The ratio 2 centimetres to 5 metres can be written in the form
dusya [7]

Answer:

n = 250

Step-by-step explanation:

To express the ratio, the quantities must have the same measures

2 cm : 5 m

= 2 cm : 500 cm [ 1 m = 100 cm ]

Divide both parts by 2

= 1 : 250 → with n = 250

6 0
3 years ago
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