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defon
3 years ago
13

Several world-class swimmers have attempted. to swim the English Channel between France and Great Britain (570 km long). Since e

ven the best swimmers can swim only about eight kilometers per hour, about how many hours would expect it to take an expert swimmers to swim the channel?
Mathematics
1 answer:
Olenka [21]3 years ago
4 0

Answer:

4hours

um...

57×10-== 4 hours

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Sofia and Diego drive to work. Sofia drives 72 miles in 1.5 hours. Diego drives 126 km in 2 hour 30 min. Work out the difference
sdas [7]

Answer:

26.4 km/hr

Step-by-step explanation:

Sofia and Diego drive to work.

For Sofia

We convert miles to km

Sofia drives 72 miles in 1.5 hours.

1 mile = 1.6 km

72 miles = x

x = 72 × 1.6 km

x = 115.2 km

We find the speed in km/hr

Speed = Distance /Time

= 115.2km/1.5 hours

= 76.8 km/hr

For Diego

Diego drives 126 km in 2 hour 30 min.

Speed = Distance/Time

Time = 2 hour 30 min = 2.5 hours

Speed = 126km/2.5 hours

= 50.4 km/hr

The difference between their average speeds in km/h is calculated as:

76.8 km/hr - 50.4 km/hr

= 26.4 km/hr

5 0
3 years ago
Write the factors of the following expression x3 (2a‐6)+x2 (2a-6)​
IrinaK [193]

Given:

The expression is

x^3(2x-6)+x^2(2x-6)

To find:

The factors of the given expression.

Solution:

We have,

x^3(2x-6)+x^2(2x-6)

First taking (2x-6) common, the given expression can be written as

=(2x-6)(x^3+x^2)

Taking x^2 common from (x^3+x^2), we get

=x^2(2x-6)(x+1)

Therefore, the factors of the given expression are x^2(2x-6)(x+1).

7 0
3 years ago
I need help on all of them pleaseeee​
dmitriy555 [2]

Step-by-step explanation:

90÷0.018=5000

90÷0.18= 500

90÷1.8 = 50

90÷18 =5

90÷180 =0.5

5 0
3 years ago
In which quadrant would ( 1, 1.5 ) be found?
Slav-nsk [51]
You would find that in the first quadrant.

6 0
3 years ago
What is 0.36 (the six repeating) as a fraction?
Lubov Fominskaja [6]
I would say that 0.36 is 36/100.
4 0
3 years ago
Read 2 more answers
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