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Alexus [3.1K]
3 years ago
13

A number line contains points Q, R, S, and T. Point Q is on the coordinate 4, R is on the coordinate 8, S is on the coordinate 9

, T is on the coordinate 12. Find the probability that a point chosen at random on QT is on ST. Express your answer as a percent.
51.5%
37.5%
25%
44%
Mathematics
1 answer:
faltersainse [42]3 years ago
8 0

37.5% esa es la respuesta correcta

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SOVA2 [1]

Answer:

1.3445367773335334434333233332

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2 years ago
Let a population consist of the values ​cigarettes, ​cigarettes, and cigarettes smoked in a day. Show that when samples of size
Katen [24]

The "sample" with "mean absolute deviation" indicate about a sample mean absolute deviation is being used as an estimator of the mean absolute deviation of a​ population

  • Mean of the sample MAD=3.3
  • Population MAD =6.4

<h3>What does this indicate about a sample mean absolute deviation used as an estimator of the mean absolute deviation of a​ population?</h3>

Generally,  The MAD measures the average dispersion around the mean of a given data collection.

1/n \sum_i-1^{n} |x_i -m(X)|

In conclusion, for the corresponding same to mean

the sample  mean absolute deviation

7,7  ↔         0

7,21  ↔         7

7,22         ↔    7.5

21,7        ↔          7

21,21 ↔     0

21,22 ↔    0.5

22,7   ↔     7.5

Therefore

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Read more about mean absolute deviation

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5 0
2 years ago
What is the determinant of the coefficient matrix of the system {4x+3y+2z=0 -3x+y+5z=0 -x-4y+3z=0
slava [35]

Answer:

  130

Step-by-step explanation:

You want the determinant of the matrix ...

  \left[\begin{array}{ccc}4&3&2\\-3&1&5\\-1&-4&3\end{array}\right]

One way to figure it is as the difference between the sum of products of the down-diagonals and the sum of products of the up-diagonals:

  D = (4)(1)(3) +(3)(5)(-1) +(2)(-3)(-4) -(-1)(1)(2) -(-4)(5)(4) -(3)(-3)(3)

  = 12 -15 +24 +2 +80 +27

  D = 130

The determinant of the coefficient matrix is 130.

_____

Many scientific and graphing calculators and web sites can perform this calculation for you.

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3 years ago
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erastovalidia [21]
1) 16
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3 years ago
I have a question on my summer packet. Find 33% of 90
Luda [366]
===========================
1)  \frac{90*33}{100}=29,7




8 0
2 years ago
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