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Mice21 [21]
3 years ago
14

HELP PLZ will mark as brainlest

Mathematics
2 answers:
Alexandra [31]3 years ago
7 0

Answer: 1 1/4

Step-by-step explanation:

hichkok12 [17]3 years ago
3 0

Answer:

1 6/7

Step-by-step explanation:

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There are 42 runners in a race.  How many different ways can the runners finish first, second, and third?
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From base camp, a hiker walks 3.5 miles west and 1.5 miles north. Another hiker walks 2 miles east and 0.5 miles south. To the n
levacccp [35]

Answer:

The hikers are 5.9 miles apart.

Step-by-step explanation:

Let O represents the base camp,

Suppose after walking 3.5 miles west, first hiker's position is A, then after going 1.5 miles north from A his final position is B,

Similarly, after walking 2 miles east, second hiker's position is C then going towards 0.5 miles south his final position is D.

By making the diagram of this situation,

Let D' is the point in the line AB,

Such that, AD' = CD

In triangle BD'D,

BD' = AB + AD' = 1.5 + 0.5 = 2 miles,

DD' = AC = AO + OC = 3.5 + 2 = 5.5 miles,

By Pythagoras theorem,

BD^2 = BD'^2 + DD'^2

BD = \sqrt{2^2 + 5.5^2}=\sqrt{4+30.25}=\sqrt{34.25}\approx 5.9

Hence, the hikers are 5.9 miles apart.

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3 years ago
Prove that sin30/cos30+sin60/cos60=sin90​
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If you like my answer than please mark me brainliest thanks

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