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creativ13 [48]
3 years ago
5

At 4pm Charlie realizes he has half an hour to get to his grandmothers house for diner. If his grandmother lives 40 miles away h

ow fast will Charlie have to drive to get there on time
Mathematics
1 answer:
gregori [183]3 years ago
7 0

Answer: Charlie have to drive at a speed of 80miles per hour in order to reach there on time.

Step-by-step explanation:

At 4pm Charlie realizes he has half an hour to get to his grandmothers house for diner. Knowing that the time he has left is 30 minutes and the distance to his grandmother's place is 40 miles, the only thing that he can control is his speed

Speed = distance travelled / time taken

40/0.5 = 80 miles per hour

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A soccer field measures 90 meters wide by 120 meters long starting together in one corner you walk the diagonal to the opposite
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Answer:

The friend walks <em>60 m</em> further than the other person

Step-by-step explanation:

Given the dimensions of the soccer field:

Width = 90 m

Length = 120 m

One person walks along its diagonal.

As the length and width of the field are perpendicular, Diagonal can be calculated using Pythagorean Theorem:

Diagonal ^2 =Length^2+Width^2

Diagonal ^2 =90^2+120^2\\\Rightarrow Diagonal ^2 =8100+14400\\\Rightarrow Diagonal ^2 =22500\\\Rightarrow Diagonal =150\ m

So, the distance walked by the person along the diagonal = 150 m

Distance walked by the person's friend to reach the opposite point = Width + Length = 120 + 90 = 210 m

So, the difference of the two distances will give us the distance that was walked further by the friend.

The difference is = 150 - 90 = <em>60 m</em>

<em></em>

So, the friend walks 60 m further than the other person.

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