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Charra [1.4K]
3 years ago
13

Write the phrase as an elgebric expression. 6 less than a number times 11. ​

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

It should be 11x-6 sorry if its incorrect

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Proportions in Triangles (9)
Nataly [62]

Answer:

3.6

Step-by-step explanation:

Divide 6 by 4

You get 1.5

Multiply 1.5 by 2.4

You get 3.6

5 0
4 years ago
Find the average squared distance between the points of r{(x,y): 0x, 0y} and the point (,)
ivolga24 [154]

The average squared distance between the points is their variance

The average squared distance is 8/3

<h3>How to determine the average squared distance?</h3>

The given parameters are:

R={(x,y): 0<=x<=2, 0<=y<=2}

The point = (2,2).

f(x,y) = (x-2)² + (y-2)²

The squared distance is calculated as:

D² = f(x,y) = (x-2)² + (y-2)²

Where the area (A) is:

A = xy

Substitute the maximum values of x and y in A = xy

A = 2 * 2

A = 4

The minimum values of x and y are 0.

So, the limits for the integrals are 0 to 2

The integral becomes

D\² = \int \int (x-2)\² + (y-2)\² dx dy

Expand

D\² = \int \int x\² -4x + 4 + (y-2)\² dx dy

Evaluate the inner integral with respect to x from 0 to 2

D\² = \int \frac 13x^3 -2x^2 + 4x + x(y-2)\² |\limits^2_0 dy

Expand

D\² = \int [\frac 13(2)^3 -2(2)^2 + 4(2) + (2)(y-2)\²] dy

Simplify

D\² = \int \frac 83 + (2)(y-2)\² dy

Expand

D\² = \int \frac 83 + 2y^2-8y + 8 \ dy

Evaluate the integral with respect to y from 0 to 2

D\² = [\frac 83y + \frac 23y^3- 4y^2 + 8y ]|\limits^2_0

Expand

D\² = \frac 83*2 + \frac 23*2^3- 4*2^2 + 8*2

D² = 32/3

The average squared distance (AD²) is calculated as:

AD² = D²/A

So, we have:

AD² = 32/3 \div 4

Evaluate the quotient

AD² = 32/12

Simplify

AD² = 8/3

Hence, the average squared distance is 8/3

Read more about average distance or variance at:

brainly.com/question/15858152

8 0
3 years ago
Assume that blood pressure readings are normally distributed with a mean of 123 and a standard deviation of 9.6. If 144 people a
Vanyuwa [196]

Answer:

The probability is 0.9938

Step-by-step explanation:

In this question, we are asked to calculate the probability that the mean blood pressure readings of a group of people is less than a certain reading.

To calculate this, we use the z score.

Mathematically;

z = (mean - value)/(standard deviation/√N)

From the question, we can identify that the mean is 125, the value is 123 , the standard deviation is 9.6 and N ( total population is 144)

Let’s plug these values;

z = (125-123)/(9.6/√144) = 2.5

Now we proceed to calculate the probability with a s score less than 2.5 using statistical tables

P(z<2.5) = 0.9938

8 0
3 years ago
If |x| + 3 =9, then x =?
sasho [114]
|x| = 6

{ x= 6
{ x= -6

X= { 6,-6}
3 0
3 years ago
Please help asap......​
levacccp [35]

Answer:

A

Step-by-step explanation:

7 0
3 years ago
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