If Sally walked 1⁄2 kilometer in 1⁄4 hour, how fast, in kilometers per hour, was she walking?

Mathematics

1 answer:

timama [110]4 years ago

6 0

0,5 km/15 min | x2
1 km/30 min
2 km/1 h

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PLS ANSWER QUICKLY!!! 20 POINTS!!! Select the correct answer. Jim's sock drawer has two pairs of black socks, three pairs of whi

ehidna [41]

Answer: B. 11/13

Step-by-step explanation:

So he starts out with 16, and picks out 3 of those 13. This means that he now has 13 socks in total in the drawer, so therefore, the answer could only be A or B. However, what makes it B, is that if he doesn't put them back, the only way he wouldn't get a full pair is with the green pair. That is where the 11/13 comes in, as two of the socks are green, making it not a full pair. But since he has 3 more black socks, 5 more white socks, and 3 more grey socks, when you add those together you get 11

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On a particularly boring transatlantic flight, one of the authors amused himself by counting the heads of the people in the seat

xxTIMURxx [149]

Answer:

The answer is 5.

Step-by-step explanation:

Total number of people noticed by author = 28

Total number of black haired people = 27

So, total number of non black haired people = 1

Also given that 6 people had whole row of seats to themselves.

Let x be the number of non black haired people who had a whole row to themselves.

Since there is only one person with non black hair and has a whole row to himself because it is mentioned that one person had a row to himself which is non black haired.

Looking at above information we can say that x = 1.

Now we can say that the number of black haired people who had a whole row to themselves = 6-x

or $6-1=5$