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DaniilM [7]
3 years ago
5

What’s the average speed in km/h of a boat that moves 15 km across a lake in 45 min?

Mathematics
1 answer:
mr Goodwill [35]3 years ago
6 0

Answer:

20 km/hr

Step-by-step explanation:

Hey

Distance= 15km

Time= 45min

Since the unit for time is hours, we will convert 45 minutes to hours

45/60 = 0.75 hours

Speed= d/t

= 15/0.75

= 1500/75

= 20 km/h

Hope this helps

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An item on sale costs 80% of the original price. The original price was $22.
sergejj [24]

Answer:

17.6

Step-by-step explanation:

22 x .80 =17.6

17.6 is 80% of 22 so that would be your answer

8 0
3 years ago
Jon ate too many holiday cookies and gained 2.2 kilograms in December. Then he went on a diet and lost 1.5 kilograms in January.
gogolik [260]

Answer:

Jon lost a total of 3 kilograms in these 3 months.

Step-by-step explanation:

Weight that Jon gained in December = 2.2 kilograms

Weight that Jon lost in January = 1.5 kilograms

Weight that Jon lost in February = 3.7 kilograms

Overall Change in his weight = Total Weight he gained - Total weight he Lost

Total weight he gained is 2.2 kilograms as he only gained weight in December. Total weight he lost will be sum of weights he lost in January and February.

So, total weight Jon lost = 1.5 + 3.7 = 5.2 kilograms

Thus,

Total change in Jon's Weight = 2.2 - 5.2 = -3.0 kilograms

This shows that Jon lost a total of 3 kilograms in these 3 months.

Conclusion:

The statement that best describe the total change in his weight is: Jon lost a total of 3 kilograms in these 3 months

5 0
3 years ago
Read 2 more answers
A survey is made in a neighborhood of 80 voters. 65 are democrats and 15 are republicans. of the democrats, 35 are women, while
Aleksandr [31]
Total voters=v=80
total no. of democrats=d=65
total no. of republicans=r=15
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probability of republicans=p2=15/80=0.1875
probability of a democrat or a republican=p1+p2=0.8125+0.1875=1 <span />
7 0
3 years ago
Read 2 more answers
I really really need pls plssss
Harman [31]

Answer:

Distribute the -6 and combine like terms which are the x's

Also combine the numbers

Step-by-step explanation:

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3 years ago
What is 2 5/8 x 2/3. with the work shown
solong [7]
Https://photomath.net/s/P56lb

The link will show you how to solve the problem but if you still don't get it you download the app Photomath and it will give you more detailed steps.
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3 years ago
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