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docker41 [41]
3 years ago
5

A person walking covers 5.20 m in 10.4s. How fast is the person moving?

Mathematics
1 answer:
nikitadnepr [17]3 years ago
3 0

Answer:

They are moving 2 m/s

Step-by-step explanation:

the answer is in the format m/s or meters per second. so in this case, just divide the seconds by the meters

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Write an expression that represents 5 squared.
Korvikt [17]

5 squared is 5^2.

Squared means the power of two, so exponent two.

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3 years ago
Find the value of x<br> x=___
ss7ja [257]
Answer :

x = 2.8

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4 0
2 years ago
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A blind man wanders under a door into an empty room. After running into the walls repeatedly for a while, it stops to think and
Nostrana [21]

From the side where the man is located in the 10' by 12' rectangular room, we have;

A) 0.046

B) The average time to escape in first attempt is approximately 605.02 seconds

<h3>Which concept can be used to find the odds and time of escape?</h3>

A) From The given diagram, we have;

Width of the door = 10 - 6 - 2 = 2

Therefore, the door is 2 feet wide

Distance, d1, from the man to the side of the door closer to him is given by Pythagorean theorem as follows;

  • d1 = √(6² + 7²) = √(85)

From the furthest side of the door to the man, we have;

  • d2 = √(7² + 8²) = √(113)

According to the law of cosines, we have;

2² = 85+113 - 2×√(85)×√(113) cos(A)

Where angle <em>A </em>is the angle formed by the lines from the man to the closer and farther sides of the door.

2×√(85)×√(113) cos(A) = 85+113 - 2²

A = arccos((85+113 - 2²)/(2×√(85)×√(113)))

A = arccos (194/(2×√(9605)) ≈ 8.213°

The angle of the possible directions in which the man can turn is 180°.

Therefore;

The probability, <em>P(</em><em>E)</em>, of escaping in the first move is therefore;

  • P(E) = 8.213°/180° ≈ 0.046

B) Given that the man escapes in the first move, the shortest and longest distances the man moves are;

d1 = √(85) and d2 = √(113)

Speed of the man, <em>v </em>= 0.5 cm/sec

Therefore by unit conversion function of a graphing calculator;

  • v = (25/1524) ft./sec

The times taken are;

t1 = √(85)/(25/1524) ≈ 562.023

t2 = √(113)/(25/1524) ≈ 648.014.

Average time, <em>t </em>= (t1 + t2)/2

Which gives;

t = (562.023 + 648.014)/2 ≈ 605.02

The average time it takes the man to escape in first move is <em>t </em><em>≈</em> 605.02 seconds.

Learn more about Pythagorean theorem and probability here:

brainly.com/question/27180985

brainly.com/question/654982

brainly.com/question/24756209

#SPJ1

3 0
1 year ago
3+5<br> Wrong answers please<br> also free poi nts for mu comra des
Aliun [14]

Answer: 21

Step-by-step explanation: i mean you asked for wrong answers...

have a good day ^_^

7 0
3 years ago
What does p equal in the following sentence: The product of 1/4 and P is negative 2?
lina2011 [118]

Answer:

-8

Step-by-step explanation:

If you do -8 / 1/4 you get -2 as an answer. However if you do 8 / 1/4 you only get 2 as an answer. Thus meaning the answer is 8. Hope this helps.

7 0
3 years ago
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