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Korvikt [17]
3 years ago
6

Is she correct ?????? HELP !!

Mathematics
1 answer:
garik1379 [7]3 years ago
8 0
Here, volume of two shapes doesn't relate with each other, so if one has double dimensions than the other, then it's volume won't be exactly double than the other, 'cause they formula's are very different. 

 Volume of a Cylinder = πr²h
v = π(4)²(6)
v = 96π

Volume of a cone = 1/3 πr²h
v = 1/3 π (8)²(12)
v = 256π

So, Ratio = 256π/96π = 128/48 = 64/24 = 32/12 = 16/6 = 8/3 [ Not 2 ]

In short, She is Incorrect!

Hope this helps!
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anzhelika [568]

Answer:

  a. 3/4 inches per minute

  b. -1 1/8 inches per minute

  c. B is fastest; 1 1/8 is more than 3/4

Step-by-step explanation:

A <em>change</em> is a <em>difference</em>. A <em>rate of change</em> is <em>one difference divided by another</em>, usually the change in y-value divided by the change in x-value.

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<h3>a.</h3>

The change in elevation is the difference between the elevation at the end of the period (6 inches) and the elevation at the beginning of the period (3 inches). The change in time period is the difference between the end time (8 min) and the beginning time (4 min).

  change in elevation per minute = (6 -3 inches)/(8 -4 min)

  = (3 inches)/(4 min) = 3/4 inches/minute

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<h3>b.</h3>

Similarly, ...

  change in elevation per minute = (3 -7 1/2 inches)/(18 -14 min)

  = (-4 1/2 inches)/(4 min) = -1 1/8 inches/minute

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<h3>c.</h3>

We know that 3/4 is more than -1 1/8, but when we talk about the "fastest rate of change", we're generally interested in the magnitude--the value without the sign. That means we understand a rate of change of -1 1/8 inches per minute to be "faster" than a rate of change of 3/4 inches per minute.

The rate of change from Part B is fastest. 1 1/8 inches per minute is more than 3/4 inches per minute.

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polet [3.4K]
101 is the correct answer for 75+26
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3 years ago
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In a village the number of houses and the number of flats are in the ratio 9:5 the number of flats and the number of bungalows T
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Answer:

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Step-by-step explanation:

Let there are 9x flats and 5x bungalows.

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It means,

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Total houses = no. of flats + no. of bungalows

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So, there are 140 houses in the village.

5 0
3 years ago
What is 50 x 79 x 27 + 69
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106,719

Answer:

50  \times  79  \times  27 + 69 \\  \\  = 106,650 + 69 \\  \\  = 106,719

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