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2 years ago

Need answers for this

Mathematics

1 answer:

pav-90 [236]2 years ago

5 0

Answer:

Step-by-step explanation:

<h3>Mean, Median,mode</h3>

$\boxed{Mean = \dfrac{Sum \ of \ all \ data}{number \ of data}}$

$\sf = \dfrac{234 + 247 + 236+212+248+243+176+195}{8}\\\\= \dfrac{1791}{8}\\\\= 223.875$

<h3>Median:</h3>

Arrange the numbers in ascending order.

176 , 195 , 212 , 234 , 236 , 243 , 247, 248

Number of data is even. So, median will be the average of 234 and 236

Median = average of the middle two terms.

$\sf = \dfrac{234+236}{2}\\\\ =\dfrac{470}{2}\\\\= 235$

Mode is the data which is occurring more number of times.

Range = maximum - minimum

= 248 - 176

= 72

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3 years ago

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Answer:

x = 387

Step-by-step explanation:

The wind acts in the opposite direction to the plane when the time is longer.

The wind acts in the same direction as the plane when the time is shorter.

Equation

d = r*t

Givens

d = 1720
x = plane's speed
y = wind speed
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t2 = 4 hours.

Substitution

d = (x + y) * t
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Since the two distances are the same, you can equate the right hand sides.

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4x + 9y = 5x Subtract 4x from both sides
9y + 4x - 4x = 5x - 4x Combine
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4 years ago