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IgorLugansk [536]
4 years ago
11

El horario y el minutero de un reloj miden respectivamente 0.7 y 1.2cm. Determinar la distancia entre los extremos de dichas man

ecillas a las 13:30 horas

Mathematics
1 answer:
Fed [463]4 years ago
8 0

Answer:

1.5887 cm

Step-by-step explanation:

If the time is 13:30, The hour pointer will be between the numbers 1 and 2.

Each number of the 12 number clock is separated by 30 degrees, so the hour pointer is at 45 degrees.

The minute pointer is at 30 minutes, so it is in number 6, being therefore at angle 180.

The angle formed by the pointers will be 180 - 45 = 135 degrees.

We can draw a triangle with both pointers and this angle (image attached)

So, we can calculate the distance between the tip of the pointers (let's call it "d") using law of cosines:

d^2 = 0.7^2 + 1.2^2 - 0.7*1.2*cos(135)

d^2 = 0.49 + 1.44 - (-0.5940) =  2.524

d = 1.5887 cm

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) Explain why the sample midrange might be preferred to the sample mean as an estimator of the population mean.
Citrus2011 [14]

Answer:

It is a good Estimator of the Population Mean because the distribution of the sample midrange is just same as the distribution of the random variable.

Step-by-step explanation: from the table,

Minimum value = 34

maximum values = 1084

The sample mid-range can be computed as:

(Min.value + max.value)/2

(34 + 1084)/2

Sample mid-range = 55

The sample midrange uses only a small portion of the data, but can be heavily affected by outliers.

It provides information about the skewness and heavy-tailedness of the distribution which is just same as the distribution of the random variable.

The nature of this distribution is not intuitive but the Central Limit in which it will approach a normal distribution for large sample size.

5 0
3 years ago
Find the midpoint of the line segment joining the points p1 and p2 <br> P1=(3,-5);p2=(5,-1)
swat32
Find mid pt formula is
x \: intercept \: \frac{x {}^{2} + x{}^{1} }{2} \\ y \: intercept\frac{y {}^{2} + y {}^{1} }{2}
so the answer is
x \: intercept \: \\ \frac{3 + 5}{2} = 4
y \: intercept \: \\ \frac{( - 5) + ( - 1)}{ 2} = - 3
mid pt is (4,-3)
6 0
4 years ago
D’Andra has a dentist appointment in 5 weeks. There are 7 days in a week. How many days are in 5 weeks?
Lisa [10]

Answer:

A. 35

Step-by-step explanation:

Each week has 7 days, and we have 5 weeks.

Week 1 has 7 days.

Week 2 has 7 days.

Week 3 has 7 days.

Week 4 has 7 days.

Week 5 has 7 days.

We can add all these together to get the total number of days: 7 + 7 + 7 + 7 + 7 = 7 * 5 = 35.

Thus, the answer is A.

Hope this helps!

8 0
4 years ago
Read 2 more answers
20 + 3 (7 + 4) + 5 + 2 (7 + 9)
Lunna [17]

Answer:

90

Step-by-step explanation:

i did the math hope this helps you out

6 0
3 years ago
200_____ times as much as 2
artcher [175]

200 Is 100 times as much as 2,

<em>200 / 2 = 100</em>

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4 years ago
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