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3 years ago

13

Las propiedades con los números reales

1 answer:

AlekseyPX3 years ago

7 0

La propiedad (a, byc son números reales, variables o expresiones algebraicas)1. Propiedad de distribución a • (b + c) = a • b + a • c2. Propiedad conmutativa de la adición a + b = b + a3. Propiedad conmutativa de la multiplicación a • b = b • a4. Propiedad asociativa de la adición a + (b + c) = (a + b) + c

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What is 272,062 rounded to the nearest hundred?

Aleks [24]

Answer:

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3 years ago

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On a cold day, hailstones fall with a velocity of 2i − 6k m s−1 . If a cyclist travels through the hail at 10i m s−1 , what is t

Paraphin [41]

Answer:

The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

Step-by-step explanation:

Given : On a cold day, hailstones fall with a velocity of $2\hat{i}-6\hat{k}\text{ m/s}$ . If a cyclist travels through the hail at $10\hat{i} \text{ m/s}$ .

To find : What is the velocity of the hail relative to the cyclist and At what angle are the hailstones falling relative to the cyclist?

Solution :

The velocity of the hailstone falls is $V_h=2\hat{i}-6\hat{k}\text{ m/s}$

The velocity of the cyclist travels through the hail is $V_c=10\hat{i} \text{ m/s}$

The velocity of the hail relative to the cyclist is given by,

$V_{hc}=V_h-V_c$

Substitute the value in the formula,

$V_{hc}=2\hat{i}-6\hat{k}-10\hat{i}$

$V_{hc}=-8\hat{i}-6\hat{k}$

So, The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

Now, The angle of hails falling relative to the cyclist is given by

$\theta = \tan^{-1}(\frac{-6}{-8})$

$\theta = \tan^{-1}(\frac{3}{4})$

$\theta = 36.86^\circ$

So, The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

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4 years ago

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3 years ago

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sdas [7]

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3 years ago

A warehouse receives 1,200 boxes of paper that need processing. The warehouse workers can process the boxes of paper at a rate o

Mariulka [41]

The function, f(t), that represents the number of boxes of paper that still need to be processed after t hours is y = 200t + 1200

The expression will be expressed as a straight line formula:

The standard form of the equation is expressed as y = mt+ b

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b is the intercept
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From the question;

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Substitute the give parameters into the formula to have:

y = 200t + 1200

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Hence the function, f(t), that represents the number of boxes of paper that still need to be processed after t hours is y = 200t + 1200

Learn more here: brainly.com/question/17003809

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3 years ago

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