Two trains leave Cleveland at the same time. One train travels east and the other travels west. The speed of the westbound train
1 answer:
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Answer:
Cost of one roll of plain wrapping paper is $12 and Cost of one roll of holiday paper is $17.
Step-by-step explanation:
Solution,
Let the cost of 1 plain wrapping paper be x.
And the cost of 1 holiday paper be y.
Julie sold 13 rolls of plain wrapping paper and 8 rolls of holiday paper and earns $292.
Total Money earned by Julie is equal to sum of number of wrapping paper multiplied with cost of wrapping paper and number of holiday paper multiplied with cost of holiday paper.
So we can frame it in equation form as;
Now, Mark sold 7 rolls of plain wrapping paper and 2 rolls of holiday paper and earns $118.
Total Money earned by Mark is equal to sum of number of wrapping paper multiplied with cost of wrapping paper and number of holiday paper multiplied with cost of holiday paper.
So we can frame it in equation form as;
Now Multiplying equation 2 by 4 we get;
Now Subtracting equation 1 from equation 3.
Now substituting the value of x in equation 1 we get;
Hence Cost of one roll of plain wrapping paper is $12 and Cost of one roll of holiday paper is $17.
Answer:
It will take her approximately 28 seconds to cross the diagonal of the pitch
Step-by-step explanation:
If we can find the length of the diameter of the field (in Metres), we can easily find the time it takes her to cross this length using motion equations.
Step one: Find the length of the field from its area.
The field is rectangular in shape. The area of the field is 48m^2. To get the area of the field, we had to multiply its length and its breadth.
i.e area = length X breadth.
Let us assume that the breadth = 6m
its length will be area / breadth = 42/ 6 = 7m
The length of the pitch = 7 m
Step Two: Find the length of the diagonal using Pythagoras' theorem.
From Pythagoras'theorem, the length of the diagonal can be obtained by
The length of the diagonal is 9.22m
Step three: Find the time using her speed and the distance she needs to cover.
Time = distance / speed
time = 9.22 /20 = 0.46 minutes
It will take her approximately 28 seconds to cross the diagonal of the pitch