Answer:
(-3,1)
Step-by-step explanation:
I think this is right
This is a simple conversion from metres to kilo metres problem in which we should know how much metres is one kilo metre or how much kilo meters is one metres.
So in order to convert from metres to k m we just have to divide by 1000 as 1 km is equal to 1000 meters. Similarly for the other way round we have to multiply by 1000 as 1 metre is 0.001 km.
SO if Mary swims 850 metres each day then she swims around 0.85 km every day.
Answer:
Step-by-step explanation:
Given that are in AP
To prove: are in AP
From given as we know if p , q, r are in AP then 2q= p+r.
Now
Which is the result of AP
.
Hence proved
Answer:
3.08 km/h.
Step-by-step explanation:
We know that,
Ali traveled at a speed of s km/h for 2.5 hours.
Let d be the distance and t be the time.
...(1)
On his return journey, he increased his speed by 4 km/h and saved 15 minutes. So, distance is d and times is t-15.
...(2)
From (1) and (2), we get
Put t=40 in (1).
So, t=40 and d=100.
Now,
Total distance = d + d = 100 + 100 = 200
Total time = t + t - 15 = 40 + 40 - 15 = 65
So, the average speed is
Therefore, the average speed is 3.08 km/h.
Supposing that 20 out of 100 people choose black or gray, the percentage is of 20%.
<h3>What is a percentage?</h3>
The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:
Hence, if 20 out of 100 people choose black or gray, the percentage is given by:
More can be learned about percentages at brainly.com/question/10491646
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